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Finding the Fourth Proportional to 508.26, 762.39 and 291.38

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Solution

The fourth proportional to 508.26, 762.39 and 291.38 is: 437.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.26 : 762.39 = 291.38 : x
  2. Step 2: Convert to fraction form
    508.26/762.39 = 291.38/x
  3. Step 3: Cross multiply
    508.26x = 762.39 × 291.38
  4. Step 4: Simplify right side
    508.26x = 222,141.39
  5. Step 5: Solve for x
    x = 222,141.39/508.26
  6. Step 6: Final answer
    x = 437.06

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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.