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The fourth proportional of 3, 4 and 6 is...

The fourth proportional of 3, 4 and 6 is

A

8

B

10

C

12

D

24

Text Solution

Verified by Experts

The correct Answer is:
A
`:. 3/4 = 6/x " or, " 3x = 24 " or," x = 24/3 = 8`.
` :. ` (a) is correct.
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Knowledge Check

  • what is the fourth proportion of 2,6 and 8 ?

    A
    48
    B
    12
    C
    16
    D
    24

  • The fourth proportional of x - y , x^(2) - y^(2) " and " x^(2) - xy + y^(2) is

    A
    ` x + y`
    B
    ` x - y`
    C
    ` x^(3) + y^(3)`
    D
    ` x^(3) - y^(3)`.

  • The mean-proportional of 4 and 9 is

    A
    36
    B
    6
    C
    `sqrt((2)/(3))`
    D
    None of these

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