The third proportion of 1.8 and 9 is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e 45.
Let the third proportion be x.
1.8 : 9 :: 9 : x
⇒ 1.8/9 = 9/x
⇒ x = 81/1.8
⇒ x = 45
SSC CHSL 2023 PYQ — Question 66
SSC CHSL - 04 Aug 2023 - Shift 1 • Quantitative Aptitude • Q66