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Finding the Fourth Proportional to 269.97, 403.04 and 221.91

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Solution

The fourth proportional to 269.97, 403.04 and 221.91 is: 331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.97 : 403.04 = 221.91 : x
  2. Step 2: Convert to fraction form
    269.97/403.04 = 221.91/x
  3. Step 3: Cross multiply
    269.97x = 403.04 × 221.91
  4. Step 4: Simplify right side
    269.97x = 89,437.50
  5. Step 5: Solve for x
    x = 89,437.50/269.97
  6. Step 6: Final answer
    x = 331.29

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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.