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Finding the Fourth Proportional to 239.11, 329.81 and 150.50

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Solution

The fourth proportional to 239.11, 329.81 and 150.50 is: 207.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.11 : 329.81 = 150.50 : x
  2. Step 2: Convert to fraction form
    239.11/329.81 = 150.50/x
  3. Step 3: Cross multiply
    239.11x = 329.81 × 150.50
  4. Step 4: Simplify right side
    239.11x = 49,636.48
  5. Step 5: Solve for x
    x = 49,636.48/239.11
  6. Step 6: Final answer
    x = 207.59

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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.