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Finding the Fourth Proportional to 196.73, 271.56 and 122.07

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Solution

The fourth proportional to 196.73, 271.56 and 122.07 is: 168.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.73 : 271.56 = 122.07 : x
  2. Step 2: Convert to fraction form
    196.73/271.56 = 122.07/x
  3. Step 3: Cross multiply
    196.73x = 271.56 × 122.07
  4. Step 4: Simplify right side
    196.73x = 33,149.33
  5. Step 5: Solve for x
    x = 33,149.33/196.73
  6. Step 6: Final answer
    x = 168.51

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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.