Math 10 Chapter 3 - Part B


1. If a/b = b/c = K then a = ___________




2. If a/ b = c/d then a + b/b = c + d/d is called the ____________ property.




3. The third proportional of 2 and 4 is _________.




4. If 4:x::x:49 then x = ____________.




5. In proportion a:b::c:d, b and c are called extremes.


6. If x a y3 then x3 = ky


7. If x:12 = 4:3 then x = 16


8. If a/b = 7/13 then b + a /b - a = 10 /3


9. The ratio among the angles of triangle are 3:7:8 then the angles are 30o 70o and 80o.


10. The ration among the sides of a triangle are 3,4,5 its perimeter s 120m. Then the length of the smallest side is 40m


11. If a:b = c:d then a | b : c | d = a + b : c + d .


12. If 3a | 5b/3a + 5b = 3c | 5d/3c + 5d then a:c = b:d


13. If a:b:c:d then a:d = b:c


14. The mean proportional in b7 and b9 is b16


15. The value of x in continued proportion of 3, x+2, 27 is 7.


16. If a:b::b:c then c is called the fourth proportional.


17. The fourth proportional of a2 | b2, b and a | b is a (a + b).


18. There is direct proportion between volume and pressure of an object.


19. Weight and mass of a body are directly proportional.


20. If y a x then y = kx





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