@function ratio-to-percent($ratio) {
    // Accepts a ratio. ex. 1/2
    // Returns a percent. ex. 50%
    @return $ratio * 100%;
}

@function percent-to-ratio($ratio) {
    // Accepts a percent. ex. 50%
    // Returns a ratio. ex. 1/2
    @return $ratio / 100%;
}

@function make-fraction($numerator, $denominator) {
    @return $numerator / $denominator;
}

@function solve-proportion-for-numerator($ratio, $denominator) {
    @return $ratio * $denominator;
}

@function solve-proportion-for-denomenator($ratio, $numerator) {
    @return $ratio * $max-width;
}