Yeah, 1600:1200 divided by 100 = 16:12 divided by 4 = 4:3 (aspect ratio). Which is standard. If you can divide the first number by 4 and the 2nd number by 3, you should be safe (16:9 for widescreen monitors usually). 1280 divides by 4, 960 divides by 3 ... 1024 does not divide by 3, so it's not a true 4:3 aspect.
The point of 1280 x 1024 is it's a 5:4 resolution, and many LCD's are built with that aspect ratio. Do you know what 4:3 aspect ratios are to me on an LCD? Useless.
A better equation is h/w, if your screen dimensions are w:h. 3:4 = 0.75 standard aspect ratio 16:10 = 0.625 most widescreen monitors 16:9 = 0.5625 msot widescreen televisions / letterbox format 5:4 = 0.8 that weird one Just grab a ruler, figure out the dimensions of your screen in inches, divide the width by height, and…
LCD screens have fixed-resolution, so there's nothing you can do about that - the pixels on the screen are set up to work at the standard resolution (in your case 1280x1024) ... so if you switch to a different resolution, it has to blur the pixels to fit the new resolution into that. You could always measure the horizontal…