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Finding the Fourth Proportional to 447.86, 668.12 and 413.44

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Solution

The fourth proportional to 447.86, 668.12 and 413.44 is: 616.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.86 : 668.12 = 413.44 : x
  2. Step 2: Convert to fraction form
    447.86/668.12 = 413.44/x
  3. Step 3: Cross multiply
    447.86x = 668.12 × 413.44
  4. Step 4: Simplify right side
    447.86x = 276,223.80
  5. Step 5: Solve for x
    x = 276,223.80/447.86
  6. Step 6: Final answer
    x = 616.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.