If `x:y=3:2` and `y:z=8:9`, find `x:y:z`

If 2x = 3y = 4z, find x:y: z.

If x:y=2:3 , y:z=3:4 , z:k=1:2 , find the value of x:y:z:k

The sides of a triangle are x,y and z .if x+y=7,y+z=9 and z+x=8. then find the area of the triangle.

If x+y+z=3 and x,y,z in R , the maximum value of ((x+y)(y+z)(z+x))/(8) is:

If A=[(x,y,z),(y,z,x),(z,x,y)] and A^3=I_3 and xyz=2 and x+y+z gt 0 find the value of x^3+y^3+z^3 is

If x,y and zinR , and Delta=|(x,x+y,x+y+z),(2x,5x+2y,7x+5y+2z),(3x,7x+3y,9x+7y+3z)|=-16 , then find value of x.