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Finding the Fourth Proportional to 238.58, 329.40 and 165.07

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Solution

The fourth proportional to 238.58, 329.40 and 165.07 is: 227.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.58 : 329.40 = 165.07 : x
  2. Step 2: Convert to fraction form
    238.58/329.40 = 165.07/x
  3. Step 3: Cross multiply
    238.58x = 329.40 × 165.07
  4. Step 4: Simplify right side
    238.58x = 54,373.23
  5. Step 5: Solve for x
    x = 54,373.23/238.58
  6. Step 6: Final answer
    x = 227.91

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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.