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Finding the Fourth Proportional to 239.38, 330.42 and 164.73

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Solution

The fourth proportional to 239.38, 330.42 and 164.73 is: 227.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.38 : 330.42 = 164.73 : x
  2. Step 2: Convert to fraction form
    239.38/330.42 = 164.73/x
  3. Step 3: Cross multiply
    239.38x = 330.42 × 164.73
  4. Step 4: Simplify right side
    239.38x = 54,430.09
  5. Step 5: Solve for x
    x = 54,430.09/239.38
  6. Step 6: Final answer
    x = 227.38

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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.