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Finding the Fourth Proportional to 238.60, 329.27 and 133.70

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Solution

The fourth proportional to 238.60, 329.27 and 133.70 is: 184.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.60 : 329.27 = 133.70 : x
  2. Step 2: Convert to fraction form
    238.60/329.27 = 133.70/x
  3. Step 3: Cross multiply
    238.60x = 329.27 × 133.70
  4. Step 4: Simplify right side
    238.60x = 44,021.75
  5. Step 5: Solve for x
    x = 44,021.75/238.60
  6. Step 6: Final answer
    x = 184.50

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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.