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Finding the Fourth Proportional to 937.26, 1,404.68 and 388.71

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Solution

The fourth proportional to 937.26, 1,404.68 and 388.71 is: 582.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.26 : 1,404.68 = 388.71 : x
  2. Step 2: Convert to fraction form
    937.26/1,404.68 = 388.71/x
  3. Step 3: Cross multiply
    937.26x = 1,404.68 × 388.71
  4. Step 4: Simplify right side
    937.26x = 546,011.22
  5. Step 5: Solve for x
    x = 546,011.22/937.26
  6. Step 6: Final answer
    x = 582.56

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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.