Question

7. If 5 : x = x : 45, then x equals:​

Answer 1

Answer:

✮Given:

5:x=x:45

✮Solution:

$⇒ \frac{5}{x} = \frac{x}{45}$

Now, Cross multiplication.

$⇒x \times x = 45 \times 5$

$⇒ {x}^{2} = 225$

$⇒x = \sqrt{225}$

$⇒x = 15$

Therefore, The answer is 15.