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Finding the Fourth Proportional to 502.71, 753.79 and 271.65

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Solution

The fourth proportional to 502.71, 753.79 and 271.65 is: 407.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.71 : 753.79 = 271.65 : x
  2. Step 2: Convert to fraction form
    502.71/753.79 = 271.65/x
  3. Step 3: Cross multiply
    502.71x = 753.79 × 271.65
  4. Step 4: Simplify right side
    502.71x = 204,767.05
  5. Step 5: Solve for x
    x = 204,767.05/502.71
  6. Step 6: Final answer
    x = 407.33

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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.