Finding the Third Proportional to 785 and 855
Calculator
Solution
The third proportional to 785 and 855 is: 931.24
Step by Step Solution
- Step 1: Write the proportion equation
785 : 855 = 855 : x - Step 2: Convert to fraction form
785/855 = 855/x - Step 3: Cross multiply
785x = 855 × 855 - Step 4: Simplify right side
785x = 731,025 - Step 5: Solve for x
x = 731,025/785 - Step 6: Final answer
x = 931.24
Related Problems
Find third proportional to 392.50 and 427.50
Half scale
Find third proportional to 1,570 and 1,710
Double scale
Find third proportional to 787 and 857
Similar ratio
Find third proportional to 1,177.50 and 1,282.50
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.