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Finding the Fourth Proportional to 747.34, 1,031.16 and 525.94

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Solution

The fourth proportional to 747.34, 1,031.16 and 525.94 is: 725.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.34 : 1,031.16 = 525.94 : x
  2. Step 2: Convert to fraction form
    747.34/1,031.16 = 525.94/x
  3. Step 3: Cross multiply
    747.34x = 1,031.16 × 525.94
  4. Step 4: Simplify right side
    747.34x = 542,328.29
  5. Step 5: Solve for x
    x = 542,328.29/747.34
  6. Step 6: Final answer
    x = 725.68

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Double scale
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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.