摘要
将两个正数的Ｈｅｒｏｎ平均以两种形式推广到了ｎ个正数的情形，并得到了ｎ个正数的Ｈｅｒｏｎ平均的一系列不等式，同时解决了不等式专著［１］提出的１００个未解决的问题中的第四个问题．
in this paper, the Heronan mean of two positive numbers is generalizationed. Two class of the same mean of n positive numbers and its a series of inequalities are obtained. and one of l00 unsolution problems in the paper [l] by kuang Ji-chang is solved.
