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Finding the Fourth Proportional to 501.75, 748.10 and 474.21

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Solution

The fourth proportional to 501.75, 748.10 and 474.21 is: 707.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.75 : 748.10 = 474.21 : x
  2. Step 2: Convert to fraction form
    501.75/748.10 = 474.21/x
  3. Step 3: Cross multiply
    501.75x = 748.10 × 474.21
  4. Step 4: Simplify right side
    501.75x = 354,757.69
  5. Step 5: Solve for x
    x = 354,757.69/501.75
  6. Step 6: Final answer
    x = 707.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.