Photoshop :: How To Crop To Set Proportion And Not Shrink Image

I am currently putting together a book of my thesis and need to re-crop many of the images that I've used and taken. The problem is that I would like to crop the images to a set proportion of the golden ratio, golden mean, divine whatever- all the same thing, basically a ratio of 1:1.618 (roughly).

I used to do this with no issue (I think) a few Photoshop versions back (maybe back towards CS2 or something, but as things have drastically changed (now running CS5.5) I am a little stuck. Whenever I select the crop tool, I try and input a fixed width and height of 1.618:1 or vice-versa depending on the image orientation- and leave the resolution blank. A long time ago, I seem to remember cropping the image with the tool and it was a fixed ratio as it is now, only before, the image did not drop from say 11x14 to 1x1.618 and blow up in resolution size. It maintained the image size and resolution and cut the excess off the smaller length generally.

I am NOT looking for that rule of thirds crop but a simple means to crop many images at one ratio. I know there is that script called the golden proportion or something however that does not crop to the right ratio that I am looking for. It mimics the existing photo's ratio which often times is off. The other reason I wanted to go through a certain proportion ratio as I did before is many of my images are of different base sizes and so I don't want to manually calculate this out dozens of times.

Does a simple (non-photo-destructive) solution to crop an image of any size to the 1:1.618 ratio, and maintain the resolution etc? By non photo-destructive I mean to not do the crop as I have been doing, then manually going into the image size and rescaling the image through shrinking the new resolution and then re-scaling the image.