1. Find the fourth proportional to 2.4, 4.6 and 7.6? 


2. Find the third proportional to 63 and 29.9? 


3. Find the mean proportional between 7921 & 9409? 


4. Find the fourth proportional to 0.5, 1.12 and 1.3? 


5. If a:b = 4:8 and b:c = 3:2 find a:b:c? 


6. If a:b=2:5, b:c=3:7 and c:d=1:3 find a:b:c:d? 


7. If 4a = 16b and 9b = 13c, Find a:b:c? 


8. If 0.6:1.4 :: 2:4:x, then x=? 


9. If x:y=9:4 then (7x3y) : (7x+3y)=? 


10. The ratio of two numbers is 5:4 and their sum is 54. The greater of the two numbers is? 


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Those are all planning for any competitive examinations can use this segment to enhance their abilities.