The Space Needle is 605 feet tall. A model of the building is 15 inches tall. What is the ratio of the height of the model to the height of the actual Space Needle?

To find the ratio of the height of the model to the actual Space Needle, we need to convert both measurements to the same unit. Let's convert the height of the Space Needle from feet to inches by multiplying by 12 (since 1 foot = 12 inches):

605 feet * 12 inches/foot = 7260 inches

Now we can find the ratio:

Height of model / Height of actual Space Needle = 15 inches / 7260 inches = 15/7260 = 1/484

Therefore, the ratio of the height of the model to the height of the actual Space Needle is 1/484.