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Finding the Fourth Proportional to 238.97, 358.44 and 131.43

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Solution

The fourth proportional to 238.97, 358.44 and 131.43 is: 197.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.97 : 358.44 = 131.43 : x
  2. Step 2: Convert to fraction form
    238.97/358.44 = 131.43/x
  3. Step 3: Cross multiply
    238.97x = 358.44 × 131.43
  4. Step 4: Simplify right side
    238.97x = 47,109.77
  5. Step 5: Solve for x
    x = 47,109.77/238.97
  6. Step 6: Final answer
    x = 197.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.