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Finding the Fourth Proportional to 238.34, 329.46 and 218.06

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Solution

The fourth proportional to 238.34, 329.46 and 218.06 is: 301.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.34 : 329.46 = 218.06 : x
  2. Step 2: Convert to fraction form
    238.34/329.46 = 218.06/x
  3. Step 3: Cross multiply
    238.34x = 329.46 × 218.06
  4. Step 4: Simplify right side
    238.34x = 71,842.05
  5. Step 5: Solve for x
    x = 71,842.05/238.34
  6. Step 6: Final answer
    x = 301.43

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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.