Finding the Fourth Proportional to 864.24, 1,191.96 and 726
Calculator
Solution
The fourth proportional to 864.24, 1,191.96 and 726 is: 1,001.30
Step by Step Solution
- Step 1: Write the proportion equation
864.24 : 1,191.96 = 726 : x - Step 2: Convert to fraction form
864.24/1,191.96 = 726/x - Step 3: Cross multiply
864.24x = 1,191.96 × 726 - Step 4: Simplify right side
864.24x = 865,362.96 - Step 5: Solve for x
x = 865,362.96/864.24 - Step 6: Final answer
x = 1,001.30
Related Problems
Find fourth proportional to 432.12, 595.98 and 363
Half scale
Find fourth proportional to 1,728.48, 2,383.92 and 1,452
Double scale
Find fourth proportional to 865.24, 1,193.34 and 727
Similar ratio
Find fourth proportional to 1,296.36, 1,787.94 and 1,089
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.