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Finding the Fourth Proportional to 503.11, 754.54 and 137.88

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Solution

The fourth proportional to 503.11, 754.54 and 137.88 is: 206.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.11 : 754.54 = 137.88 : x
  2. Step 2: Convert to fraction form
    503.11/754.54 = 137.88/x
  3. Step 3: Cross multiply
    503.11x = 754.54 × 137.88
  4. Step 4: Simplify right side
    503.11x = 104,035.98
  5. Step 5: Solve for x
    x = 104,035.98/503.11
  6. Step 6: Final answer
    x = 206.79

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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.