Get new width or height while preserving the aspect ratio

aspectRatio.js

// Description: Get new width or height while preserving the aspect ratio
// TODO: Add AspectRatio related methods
var AspectRatio = {
  getScaled: function ( currentW, currentH, newSize, property ) {
    return ( property === 'width' )? ((currentH / currentW) * newSize) : (currentW / currentH) * newSize)
  }
};