SSC CGL 17 Aug 2017 Shift 2 Paper

Question : 55 of 100

Marks: +1, -0

What is the fourth proportional to 72,168 and 150?

Solution:

Let the fourth proportional be x
i. e .,

72: 168:: 150: x

⇒

{72}/{168}= {150}/{x}

∴

x= {150 × 168}/{72}=350

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