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Finding the Fourth Proportional to 508.69, 763.17 and 291.79

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Solution

The fourth proportional to 508.69, 763.17 and 291.79 is: 437.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.69 : 763.17 = 291.79 : x
  2. Step 2: Convert to fraction form
    508.69/763.17 = 291.79/x
  3. Step 3: Cross multiply
    508.69x = 763.17 × 291.79
  4. Step 4: Simplify right side
    508.69x = 222,685.37
  5. Step 5: Solve for x
    x = 222,685.37/508.69
  6. Step 6: Final answer
    x = 437.76

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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.