The interpolation calculator allows you to calculate the
value of a point along a line if you know two other points
on that line. Enter the first point (First X, First Y) and
the second point (Second X, Second Y) to establish the
general direction of the line. Then, enter the X value of the
third point.

This calculator applies the linear interpolation formula to
derive the dependent (y) value of the third point. This
presumes the three points are in a straight line and that
there is no natural variation or error in measurement. Linear
interpolation works fairly well for simple models, especially
when you are trying to estimate data relatively close to your
trusted measurements.

#### Practical Example: Interpolation Calculator