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Finding the Fourth Proportional to 502.86, 752.66 and 259.05

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Solution

The fourth proportional to 502.86, 752.66 and 259.05 is: 387.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.86 : 752.66 = 259.05 : x
  2. Step 2: Convert to fraction form
    502.86/752.66 = 259.05/x
  3. Step 3: Cross multiply
    502.86x = 752.66 × 259.05
  4. Step 4: Simplify right side
    502.86x = 194,974.88
  5. Step 5: Solve for x
    x = 194,974.88/502.86
  6. Step 6: Final answer
    x = 387.73

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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.