Question

Find the fourth proportional to $2.4,4.6$ and $7.6$?

• A. $14$
• B. $14.657$
• C. $15.56$
• D. $14.56$

Answer 1

Answer: (D)

$14.56$

Let the fourth proportional be $x$

$\therefore \frac{2.4}{4.6}=\frac{7.6}{x}$

$\Rightarrow x=\frac{7.6\times 4.6}{2.4}$

$\Rightarrow x=14.56$