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If 18,x,x,256 are proportion, find x....

If `18,x,x,256` are proportion, find x.

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81 : x :: x : 256 `implies 81 xx 256 = x xx x implies x = 144
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QUANTUM CAT-RATIO, PROPORTION & VARIATION-QUESTION BANK
  1. The first, second and fouth terms of a proportional are 5,15and 90 res...

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  2. The ratio of length to width of a rectangular sheet of paper is 5:3. I...

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  3. If 18,x,x,256 are proportion, find x.

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  4. The ratio between the number of men and women in an office is 5:7. If ...

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  5. The age of Chandi and Radhika are in the ratio 5:3. If Chandi's age is...

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  6. The ratio of the number of boys to that of girls in a school is 9:11. ...

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  7. The ratio of the number of boys to that of girls in a school is 9:11. ...

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  8. What is the least possible number which must be substracted form 16, ...

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  9. If (a+b):(a-b)=15:1 then the value of a^(2)-b^(2) is:

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  10. The mean proportional between 8 and 98 is :

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  11. The students in three classes are in the ratio of 2:3:4. If 40 student...

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  12. The dimensions of a photograph are 4 and 1.8 cms. If the breadth of th...

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  13. Two equal containers are filled with the mixture of milk and water. Th...

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  14. A cat takes 7 steps for every 5 steps of a dog, but 5 steps of a dog a...

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  15. A camel pursue an elephant and takes 5 leaps for every 7 leaps of the ...

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  16. If A:B=4:5,B:C=3:4,C:D=7:11, then A:D is

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  17. Mean proportional between 17 and 153 is :

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  18. The mean proportinal between 16 and 49 :

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  19. If a:b=2:3, then (5a+b):(3a+2b) is

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  20. a=2b=3c=4d then a:b:c:d is

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