If a, b, c, d are in proportion, then

If a, b, c are in proportion, then

If a,b,c and d are in proportion, then

If a, b, c and d are in proportion, then show that (a^(3)+3ab^(2))/(3a^(2)b+b^(3))=(c^(3)+3cd^(2))/(3c^(2)d+d^(3))

If a ,\ b ,\ c are in proportion, then (a) a^2=b c (b) b^2=a c (c) c^2=a b (d) None of these

If a ,\ b ,\ c are in proportion, then (a) a : b :: b : c (b) a : b :: c : a c) a : b :: c : b (d) a : c :: b : c

State True or False: If b : a = c : d, then a, b, c, d are in proportion.

a:b and c:d are in proportion then