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Finding the Fourth Proportional to 500.96, 749.88 and 408.80

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Solution

The fourth proportional to 500.96, 749.88 and 408.80 is: 611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.96 : 749.88 = 408.80 : x
  2. Step 2: Convert to fraction form
    500.96/749.88 = 408.80/x
  3. Step 3: Cross multiply
    500.96x = 749.88 × 408.80
  4. Step 4: Simplify right side
    500.96x = 306,550.94
  5. Step 5: Solve for x
    x = 306,550.94/500.96
  6. Step 6: Final answer
    x = 611.93

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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.