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Finding the Fourth Proportional to 502.91, 753.93 and 242.78

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Solution

The fourth proportional to 502.91, 753.93 and 242.78 is: 363.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.91 : 753.93 = 242.78 : x
  2. Step 2: Convert to fraction form
    502.91/753.93 = 242.78/x
  3. Step 3: Cross multiply
    502.91x = 753.93 × 242.78
  4. Step 4: Simplify right side
    502.91x = 183,039.13
  5. Step 5: Solve for x
    x = 183,039.13/502.91
  6. Step 6: Final answer
    x = 363.96

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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.