The "4:3 ratio" is a common aspect ratio used in various visual media, including televisions, computer monitors, and photography. It means that for every 4 units of width, there are 3 units of height. This ratio was widely used in older television screens and standard-definition video formats, providing a more square-like appearance compared to modern widescreen formats. In recent years, the 4:3 ratio has become less common as 16:9 widescreen formats have gained popularity. However, it is still used in specific applications, such as photography and video games, where a more traditional look is desired.