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Finding the Fourth Proportional to 503.69, 754.14 and 379.92

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Solution

The fourth proportional to 503.69, 754.14 and 379.92 is: 568.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.69 : 754.14 = 379.92 : x
  2. Step 2: Convert to fraction form
    503.69/754.14 = 379.92/x
  3. Step 3: Cross multiply
    503.69x = 754.14 × 379.92
  4. Step 4: Simplify right side
    503.69x = 286,511.47
  5. Step 5: Solve for x
    x = 286,511.47/503.69
  6. Step 6: Final answer
    x = 568.83

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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.