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Finding the Fourth Proportional to 299.91, 413.97 and 194.82

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Solution

The fourth proportional to 299.91, 413.97 and 194.82 is: 268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.91 : 413.97 = 194.82 : x
  2. Step 2: Convert to fraction form
    299.91/413.97 = 194.82/x
  3. Step 3: Cross multiply
    299.91x = 413.97 × 194.82
  4. Step 4: Simplify right side
    299.91x = 80,647.35
  5. Step 5: Solve for x
    x = 80,647.35/299.91
  6. Step 6: Final answer
    x = 268.90

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Why These Related Problems?

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