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Finding the Fourth Proportional to 502.77, 754.37 and 271.61

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Solution

The fourth proportional to 502.77, 754.37 and 271.61 is: 407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.77 : 754.37 = 271.61 : x
  2. Step 2: Convert to fraction form
    502.77/754.37 = 271.61/x
  3. Step 3: Cross multiply
    502.77x = 754.37 × 271.61
  4. Step 4: Simplify right side
    502.77x = 204,893.76
  5. Step 5: Solve for x
    x = 204,893.76/502.77
  6. Step 6: Final answer
    x = 407.53

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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.