Exams › SSC CGL (Prelims) › General

If 28.9 : x :: x : 36.1 and x > 0, find the value of x.

1. 38.3
2. 30.4
3. 35
4. 32.3

Correct answer: 32.3

Solution

For the proportion 28.9:x::x:36.1, we have x^2 = 28.9 x 36.1 = 1043.29. Taking the positive square root: x = sqrt(1043.29) = 32.3 (approx).

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