1:4::9:? – InterviewSolution

1.

1:4::9:?

Answer»

1:4 :: 9 :?

Let fourth proportion = x

We know,Product of means = Product of extremes

4 * 9 = 1* xx = 36

Therefore,Fourth proportion = 36

it is square os 1:2::3 hence last is square of 4 that is 16.hence 16 is answer.

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