Finding the Third Proportional to 747 and 873
Calculator
Solution
The third proportional to 747 and 873 is: 1,020.25
Step by Step Solution
- Step 1: Write the proportion equation
747 : 873 = 873 : x - Step 2: Convert to fraction form
747/873 = 873/x - Step 3: Cross multiply
747x = 873 × 873 - Step 4: Simplify right side
747x = 762,129 - Step 5: Solve for x
x = 762,129/747 - Step 6: Final answer
x = 1,020.25
Related Problems
Find third proportional to 373.50 and 436.50
Half scale
Find third proportional to 1,494 and 1,746
Double scale
Find third proportional to 749 and 875
Similar ratio
Find third proportional to 1,120.50 and 1,309.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.