What is the third proportional to 28 and 112?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 448 .
Let third proportional = x
Then, 28 : 112 = 112 : x
⇒ 28 × x = 112 × 112
⇒ x = (112 × 112) ÷ 28
⇒ x = 12544 ÷ 28 = 448