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Finding the Fourth Proportional to 409.23, 564.56 and 269.17

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Solution

The fourth proportional to 409.23, 564.56 and 269.17 is: 371.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.23 : 564.56 = 269.17 : x
  2. Step 2: Convert to fraction form
    409.23/564.56 = 269.17/x
  3. Step 3: Cross multiply
    409.23x = 564.56 × 269.17
  4. Step 4: Simplify right side
    409.23x = 151,960.87
  5. Step 5: Solve for x
    x = 151,960.87/409.23
  6. Step 6: Final answer
    x = 371.33

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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.