Finding the Fourth Proportional to 747.99, 1,031.40 and 558.99
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Solution
The fourth proportional to 747.99, 1,031.40 and 558.99 is: 770.79
Step by Step Solution
- Step 1: Write the proportion equation
747.99 : 1,031.40 = 558.99 : x - Step 2: Convert to fraction form
747.99/1,031.40 = 558.99/x - Step 3: Cross multiply
747.99x = 1,031.40 × 558.99 - Step 4: Simplify right side
747.99x = 576,542.29 - Step 5: Solve for x
x = 576,542.29/747.99 - Step 6: Final answer
x = 770.79
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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.