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Finding the Fourth Proportional to 269.18, 371.49 and 225.44

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Solution

The fourth proportional to 269.18, 371.49 and 225.44 is: 311.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.18 : 371.49 = 225.44 : x
  2. Step 2: Convert to fraction form
    269.18/371.49 = 225.44/x
  3. Step 3: Cross multiply
    269.18x = 371.49 × 225.44
  4. Step 4: Simplify right side
    269.18x = 83,748.71
  5. Step 5: Solve for x
    x = 83,748.71/269.18
  6. Step 6: Final answer
    x = 311.13

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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.