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Finding the Fourth Proportional to 409.38, 564.91 and 232.34

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Solution

The fourth proportional to 409.38, 564.91 and 232.34 is: 320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.38 : 564.91 = 232.34 : x
  2. Step 2: Convert to fraction form
    409.38/564.91 = 232.34/x
  3. Step 3: Cross multiply
    409.38x = 564.91 × 232.34
  4. Step 4: Simplify right side
    409.38x = 131,247.20
  5. Step 5: Solve for x
    x = 131,247.20/409.38
  6. Step 6: Final answer
    x = 320.60

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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.