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Finding the Fourth Proportional to 238.34, 329.27 and 217.49

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Solution

The fourth proportional to 238.34, 329.27 and 217.49 is: 300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.34 : 329.27 = 217.49 : x
  2. Step 2: Convert to fraction form
    238.34/329.27 = 217.49/x
  3. Step 3: Cross multiply
    238.34x = 329.27 × 217.49
  4. Step 4: Simplify right side
    238.34x = 71,610.20
  5. Step 5: Solve for x
    x = 71,610.20/238.34
  6. Step 6: Final answer
    x = 300.45

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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.