Find the fourth proportional to 7, 4, and 7.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 4.
As we know when a, b, c, and d are in proportion,
where d is the fourth proportion
⇒ a/b = c/d
According to the question;
⇒ 7/4 = 7/d
⇒ d = 4
Hence, the fourth proportion is 4.