hi,
I tried adding the code and it stretches the image out to 269px (I also tried other bigger pixel values too).
I tried squashing an image in Photoshop from 269px to 225px first to see what happens when I add it into Wordpress, but the code stretches the image in 4 directions, not just downwards. So it messes the image up 
Wordpress always wants to crop the image to 225 px height, even with the code. Is this a part of Wordpress that can’t be changed?