You can make two or more objects the same width, height, or both. The dimensions of the last object you select determine which width or height are used. For example, if you Shift+click several objects to make the same width, the objects are resized to match the width of the object that you selected last. In a group of selected objects, the last object has solid resizing handles.
Note: You can only resize an image field if its Sizing option (located in the Field tab of the Object palette) is set to an option other than Use Image Size.
2. Select Layout > Make Same Size > [dimension].