Simple Harmonic Motion

Two simple harmonic motion, are represented by the equations \({y_1} = 10\sin \left( {3\pi t + {\pi \over 3}} \right)\) \({y_2} = 5(\sin 3\pi t + \sqrt 3 \cos 3\pi t)\) Ratio of amplitude of y₁ to y₂ = x : 1. The value of x is ______________.