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Finding the Fourth Proportional to 937.28, 1,404.36 and 662.81

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Solution

The fourth proportional to 937.28, 1,404.36 and 662.81 is: 993.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.28 : 1,404.36 = 662.81 : x
  2. Step 2: Convert to fraction form
    937.28/1,404.36 = 662.81/x
  3. Step 3: Cross multiply
    937.28x = 1,404.36 × 662.81
  4. Step 4: Simplify right side
    937.28x = 930,823.85
  5. Step 5: Solve for x
    x = 930,823.85/937.28
  6. Step 6: Final answer
    x = 993.11

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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.