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Finding the Fourth Proportional to 669.41, 1,001.92 and 607.15

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Solution

The fourth proportional to 669.41, 1,001.92 and 607.15 is: 908.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.41 : 1,001.92 = 607.15 : x
  2. Step 2: Convert to fraction form
    669.41/1,001.92 = 607.15/x
  3. Step 3: Cross multiply
    669.41x = 1,001.92 × 607.15
  4. Step 4: Simplify right side
    669.41x = 608,310.97
  5. Step 5: Solve for x
    x = 608,310.97/669.41
  6. Step 6: Final answer
    x = 908.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.