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Finding the Fourth Proportional to 937.20, 1,404.81 and 388.83

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Solution

The fourth proportional to 937.20, 1,404.81 and 388.83 is: 582.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.20 : 1,404.81 = 388.83 : x
  2. Step 2: Convert to fraction form
    937.20/1,404.81 = 388.83/x
  3. Step 3: Cross multiply
    937.20x = 1,404.81 × 388.83
  4. Step 4: Simplify right side
    937.20x = 546,232.27
  5. Step 5: Solve for x
    x = 546,232.27/937.20
  6. Step 6: Final answer
    x = 582.83

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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.