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Finding the Fourth Proportional to 197.16, 271.96 and 144.82

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Solution

The fourth proportional to 197.16, 271.96 and 144.82 is: 199.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.16 : 271.96 = 144.82 : x
  2. Step 2: Convert to fraction form
    197.16/271.96 = 144.82/x
  3. Step 3: Cross multiply
    197.16x = 271.96 × 144.82
  4. Step 4: Simplify right side
    197.16x = 39,385.25
  5. Step 5: Solve for x
    x = 39,385.25/197.16
  6. Step 6: Final answer
    x = 199.76

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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.