How do I use proportionalrity theroms to solve geometric problems?

Proportionalrity means when two variables whose ratio is constant or forming a relationship with other parts or quantities; being in proportion.Properly related in size, degree, or other measurable characteristics, which can also be known as corresponding. When there are little triangles on a horizontal line, then that means the lines are parallel to eachother. There are three types of theroms you could use. The Triangle proportions ality therom, triangle proportional ality therom converse, and the theroms of proportionality.
A proportion is a name we give to a statement that two ratios are equal. It can be written in two ways:

• two equal fractions,

  or,

• using a colon,    a:b = c:d

When using porprotions, you can use them to test weather the ratios are equal to eachother. You can also use porprotions when looking for a missing term in a proportion. First, write the proportion, using a letter to stand for the missing term. Some examples would be:

• If an object travels at a constant speed then the distance traveled is proportional to the time spent traveling, with the speed being the constant of proportionality.