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Finding the Fourth Proportional to 270.27, 402.17 and 269.36

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Solution

The fourth proportional to 270.27, 402.17 and 269.36 is: 400.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.27 : 402.17 = 269.36 : x
  2. Step 2: Convert to fraction form
    270.27/402.17 = 269.36/x
  3. Step 3: Cross multiply
    270.27x = 402.17 × 269.36
  4. Step 4: Simplify right side
    270.27x = 108,328.17
  5. Step 5: Solve for x
    x = 108,328.17/270.27
  6. Step 6: Final answer
    x = 400.81

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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.