The original image has a resolution of 300 x 168
The aspect ratio is 300/ 168 or 1.78
The image at half the size is 150 x 84
The image at quarter the size is 75 x 42
The original image has a resolution of 259 x 194
The aspect ratio is 259/ 194 or 1.33
The image at half the size is 129.5 x 97
The image at quarter the size is 64.75 x 48.5
The original image has a resolution of 251 x 201
The aspect ratio is 251/ 201 or 1.24
The image at half the size is 125.5 x 100.5
The image at quarter the size is 62.75 x 50.25