Finding the Third Proportional to 769.50 and 909
Calculator
Solution
The third proportional to 769.50 and 909 is: 1,073.79
Step by Step Solution
- Step 1: Write the proportion equation
769.50 : 909 = 909 : x - Step 2: Convert to fraction form
769.50/909 = 909/x - Step 3: Cross multiply
769.50x = 909 × 909 - Step 4: Simplify right side
769.50x = 826,281 - Step 5: Solve for x
x = 826,281/769.50 - Step 6: Final answer
x = 1,073.79
Related Problems
Find third proportional to 384.75 and 454.50
Half scale
Find third proportional to 1,539 and 1,818
Double scale
Find third proportional to 772 and 911
Similar ratio
Find third proportional to 1,154.25 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.