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Finding the Fourth Proportional to 506.24, 758.96 and 408.80

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Solution

The fourth proportional to 506.24, 758.96 and 408.80 is: 612.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.24 : 758.96 = 408.80 : x
  2. Step 2: Convert to fraction form
    506.24/758.96 = 408.80/x
  3. Step 3: Cross multiply
    506.24x = 758.96 × 408.80
  4. Step 4: Simplify right side
    506.24x = 310,262.85
  5. Step 5: Solve for x
    x = 310,262.85/506.24
  6. Step 6: Final answer
    x = 612.88

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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.