One theory holds that the beauty of wakyu is due to the golden ratio that exists between the distance from the top of the bow to where the arrow is cocked and the distance from where the arrow is cocked to the bottom of the bow.
一説では弓を張った状態で矢を番える位置で分けた弓の上下の長さの比率が黄金比に近く、和弓の美しさの所以とも言われている。