Finding the Third Proportional to 855 and 928.50
Calculator
Solution
The third proportional to 855 and 928.50 is: 1,008.32
Step by Step Solution
- Step 1: Write the proportion equation
855 : 928.50 = 928.50 : x - Step 2: Convert to fraction form
855/928.50 = 928.50/x - Step 3: Cross multiply
855x = 928.50 × 928.50 - Step 4: Simplify right side
855x = 862,112.25 - Step 5: Solve for x
x = 862,112.25/855 - Step 6: Final answer
x = 1,008.32
Related Problems
Find third proportional to 427.50 and 464.25
Half scale
Find third proportional to 1,710 and 1,857
Double scale
Find third proportional to 857 and 931
Similar ratio
Find third proportional to 1,282.50 and 1,392.75
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.