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Finding the Fourth Proportional to 238.74, 329.44 and 133.82

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Solution

The fourth proportional to 238.74, 329.44 and 133.82 is: 184.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.74 : 329.44 = 133.82 : x
  2. Step 2: Convert to fraction form
    238.74/329.44 = 133.82/x
  3. Step 3: Cross multiply
    238.74x = 329.44 × 133.82
  4. Step 4: Simplify right side
    238.74x = 44,085.66
  5. Step 5: Solve for x
    x = 44,085.66/238.74
  6. Step 6: Final answer
    x = 184.66

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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.