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Finding the Fourth Proportional to 452.43, 624.20 and 255.90

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Solution

The fourth proportional to 452.43, 624.20 and 255.90 is: 353.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.43 : 624.20 = 255.90 : x
  2. Step 2: Convert to fraction form
    452.43/624.20 = 255.90/x
  3. Step 3: Cross multiply
    452.43x = 624.20 × 255.90
  4. Step 4: Simplify right side
    452.43x = 159,732.78
  5. Step 5: Solve for x
    x = 159,732.78/452.43
  6. Step 6: Final answer
    x = 353.06

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.