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Finding the Fourth Proportional to 269.44, 404.44 and 141.28

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Solution

The fourth proportional to 269.44, 404.44 and 141.28 is: 212.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.44 : 404.44 = 141.28 : x
  2. Step 2: Convert to fraction form
    269.44/404.44 = 141.28/x
  3. Step 3: Cross multiply
    269.44x = 404.44 × 141.28
  4. Step 4: Simplify right side
    269.44x = 57,139.28
  5. Step 5: Solve for x
    x = 57,139.28/269.44
  6. Step 6: Final answer
    x = 212.07

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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.