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Finding the Fourth Proportional to 938.00, 1,294.56 and 658.10

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Solution

The fourth proportional to 938.00, 1,294.56 and 658.10 is: 908.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.00 : 1,294.56 = 658.10 : x
  2. Step 2: Convert to fraction form
    938.00/1,294.56 = 658.10/x
  3. Step 3: Cross multiply
    938.00x = 1,294.56 × 658.10
  4. Step 4: Simplify right side
    938.00x = 851,943.46
  5. Step 5: Solve for x
    x = 851,943.46/938.00
  6. Step 6: Final answer
    x = 908.26

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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.