If a, b, c are in proportion, then

If a, b, c, d are in proportion, then

Assertion : 16 : 24 :: 20 : 30 are in proportion. Reason : If a, b, c, d are in proportion, then a : c = b : d.

If a, b, c, d are in proportion, then a : b = c : d and written as a : b : : c : d . Find x if 36, 24, x, 16 are in proportion.

If a, b, c, d are in proportion, then a : b = c : d and written as a : b : : c : d . Which of the following is true?

If a, b, c, d are in proportion, then a : b = c : d and written as a : b : : c : d . If 57 : x = 51 : 85 , then value of x is

Assertion : If 3, 10, 15, 50 are in proportion, then 3 and 50 are middle terms and 10 and 15 are extreme terms. Reason : If a, b, c, d are in proportion then a and d are extreme terms and b and c are middle terms.

If a,b,c,d are in proportion, then prove that sqrt((a^2+5c^2)/(b^2+5d^2))=a/b

If a,b,c,d are in proportion, then prove that (a^2+ab+b^2)/(a^2-ab+b^2)=(c^2+cd+d^2)/(c^2-cd+d^2)

Statement (P):-If a, b, c, d are in proportion then ac- bd. Statement (Q): The ratio of 25 sec to 3 Minutes is 5:36.