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Finding the Fourth Proportional to 437.53, 603.39 and 387.82

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Solution

The fourth proportional to 437.53, 603.39 and 387.82 is: 534.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.53 : 603.39 = 387.82 : x
  2. Step 2: Convert to fraction form
    437.53/603.39 = 387.82/x
  3. Step 3: Cross multiply
    437.53x = 603.39 × 387.82
  4. Step 4: Simplify right side
    437.53x = 234,006.71
  5. Step 5: Solve for x
    x = 234,006.71/437.53
  6. Step 6: Final answer
    x = 534.84

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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.