SSC GD Constable 6 Feb 2025 Shift 2 Paper

Section: Elementary Mathematics

Question : 50 of 80

Marks: +1, -0

Two numbers are x and 4x, and their mean proportional is 456976. Find x.

Solution:

If two numbers are

a

and

b

, their mean proportional is given by:

\;\text " Mean Proportional "\;={√{ }} a × b

Calculation:

\;\;\text " Mean Proportional "\;={√{ }} x × 4 x

\;⇒ 456976={√{ }} x × 4 x

\;⇒ 456976={√{ }} 4 x^2

\;⇒ 456976=2 x

\;⇒ x=\;{456976}/{2}

\;⇒ x=228488

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