According to the given information a2x α byz ⇒ a2 x = byz czx α b2y ⇒ czx = ba2y and c2z a axy ⇒ c2z = axy From (ii), we get c2zx = cb2y ⇒ axyz = cb2y [∴ c2z = from (iii)] ⇒ ax2 = cb2 ⇒ a2x2 = acb2 From (i), we get a2x2 = bxyz ⇒ acb2 = bxyz [∴ a2x2 = acb2 from (iv)] ⇒ abc = xyz ⇒ abc α xyz