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Finding the Fourth Proportional to 239.40, 329.94 and 169.47

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Solution

The fourth proportional to 239.40, 329.94 and 169.47 is: 233.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.40 : 329.94 = 169.47 : x
  2. Step 2: Convert to fraction form
    239.40/329.94 = 169.47/x
  3. Step 3: Cross multiply
    239.40x = 329.94 × 169.47
  4. Step 4: Simplify right side
    239.40x = 55,914.93
  5. Step 5: Solve for x
    x = 55,914.93/239.40
  6. Step 6: Final answer
    x = 233.56

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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.