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Finding the Fourth Proportional to 508.31, 762.56 and 234.35

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Solution

The fourth proportional to 508.31, 762.56 and 234.35 is: 351.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.31 : 762.56 = 234.35 : x
  2. Step 2: Convert to fraction form
    508.31/762.56 = 234.35/x
  3. Step 3: Cross multiply
    508.31x = 762.56 × 234.35
  4. Step 4: Simplify right side
    508.31x = 178,704.76
  5. Step 5: Solve for x
    x = 178,704.76/508.31
  6. Step 6: Final answer
    x = 351.57

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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.