Dynamically scale images to fit a specified size width and height

So after extensive research and tons of jQuery and Javascript solutions I simply could not find a way in which to dynamically scale images to a specified size both horizontally and vertically, I found tons of information on scaling to fit width wise and keep the aspect ratio, or scaling to fit height wise and keep the aspect ratio, but couldn't figure out whether the image was too tall or too short and adjust accordingly.

So in my example, I had a <div> with a set width of 460px and a set height of 280px, and i need the image to fit, all of itself into that area without stretching (maintaining its aspect ratio)