How did you rescale those polygons?
There's a hidden Scale editing tool where you can enter specific scale factor.
To access this tool click Customize menu -> Customize mode. In commands tab find Scale tool in Editor category. Drag it to some toolbar.
Next, in edit session, select polygons, click Scale tool and press F key on a keyboard. This give you an option to enter specific scale factor which in your case is 0.29/0.24 = 1.208333333