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Finding the Fourth Proportional to 742.84, 1,024.25 and 658.73

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Solution

The fourth proportional to 742.84, 1,024.25 and 658.73 is: 908.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    742.84 : 1,024.25 = 658.73 : x
  2. Step 2: Convert to fraction form
    742.84/1,024.25 = 658.73/x
  3. Step 3: Cross multiply
    742.84x = 1,024.25 × 658.73
  4. Step 4: Simplify right side
    742.84x = 674,703.47
  5. Step 5: Solve for x
    x = 674,703.47/742.84
  6. Step 6: Final answer
    x = 908.28

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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.