Finding the Third Proportional to 772.50 and 909
Calculator
Solution
The third proportional to 772.50 and 909 is: 1,069.62
Step by Step Solution
- Step 1: Write the proportion equation
772.50 : 909 = 909 : x - Step 2: Convert to fraction form
772.50/909 = 909/x - Step 3: Cross multiply
772.50x = 909 × 909 - Step 4: Simplify right side
772.50x = 826,281 - Step 5: Solve for x
x = 826,281/772.50 - Step 6: Final answer
x = 1,069.62
Related Problems
Find third proportional to 386.25 and 454.50
Half scale
Find third proportional to 1,545 and 1,818
Double scale
Find third proportional to 775 and 911
Similar ratio
Find third proportional to 1,158.75 and 1,363.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.