Calculate the unit rate for each tiler above to determine if proportional relationships exist. The rates at which Toni's Tiles and Bob's Bathrooms tile are to one another. The rates at which Toni's Tiles and Rhonda's Restroom Redos tile are to one another. The rates at which Bob's Bathrooms and Rhonda's Restroom Redos tile are to one another. Two items are in a proportional relationship if they the same unit rate.