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Finding the Fourth Proportional to 447.65, 668.23 and 413.82

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Solution

The fourth proportional to 447.65, 668.23 and 413.82 is: 617.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.65 : 668.23 = 413.82 : x
  2. Step 2: Convert to fraction form
    447.65/668.23 = 413.82/x
  3. Step 3: Cross multiply
    447.65x = 668.23 × 413.82
  4. Step 4: Simplify right side
    447.65x = 276,528.30
  5. Step 5: Solve for x
    x = 276,528.30/447.65
  6. Step 6: Final answer
    x = 617.73

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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.