Possible to script something to turn window size into 1.3x in the x- or y-direction?

So right now I'm running a 4k display at retina with my main window snap zones forming a 5x3 grid.

I have been using this for a while and love it. The only thing I wish I had sometimes is a way to quickly "pop out" the window by just expanding it 0.3 width to the right or 0.3 height downwards.

The script would need to read current window size and resize it to the closest integer to 1.3x that dimensional length, then be able to use restore window size afterwards.

Can anyone point me in a direction for writing up something like this? I feel like it should be easy but when looking into some apple script stuff there seems to be a variety of ways to potentially do it with issues in each method.