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Finding the Fourth Proportional to 239.18, 329.72 and 169.02

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Solution

The fourth proportional to 239.18, 329.72 and 169.02 is: 233.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.18 : 329.72 = 169.02 : x
  2. Step 2: Convert to fraction form
    239.18/329.72 = 169.02/x
  3. Step 3: Cross multiply
    239.18x = 329.72 × 169.02
  4. Step 4: Simplify right side
    239.18x = 55,729.27
  5. Step 5: Solve for x
    x = 55,729.27/239.18
  6. Step 6: Final answer
    x = 233.00

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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.