Question : Find the fourth proportional of 22, 66 and 11.
Option 1: 23
Option 2: 33
Option 3: 17
Option 4: 39
Answer (1)
25th Jan, 2024
Correct Answer: 33
Solution :
Given numbers: 22, 66, and 11
Let the fourth proportion be $x$.
For the numbers a, b, c, and d
if a ∶ b ∶ ∶ c ∶ d
then,
ad = bc
Where d is the fourth proportional of a, b, and c.
⇒ $22x=66\times 11$
⇒ $x=\frac{66\times 11}{22}$
⇒ $x=33$
Hence, the correct answer is 33.
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