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Finding the Fourth Proportional to 232.11, 320.28 and 197.28

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Solution

The fourth proportional to 232.11, 320.28 and 197.28 is: 272.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.11 : 320.28 = 197.28 : x
  2. Step 2: Convert to fraction form
    232.11/320.28 = 197.28/x
  3. Step 3: Cross multiply
    232.11x = 320.28 × 197.28
  4. Step 4: Simplify right side
    232.11x = 63,184.84
  5. Step 5: Solve for x
    x = 63,184.84/232.11
  6. Step 6: Final answer
    x = 272.22

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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.