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Finding the Fourth Proportional to 196.02, 270.62 and 129.73

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Solution

The fourth proportional to 196.02, 270.62 and 129.73 is: 179.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.02 : 270.62 = 129.73 : x
  2. Step 2: Convert to fraction form
    196.02/270.62 = 129.73/x
  3. Step 3: Cross multiply
    196.02x = 270.62 × 129.73
  4. Step 4: Simplify right side
    196.02x = 35,107.53
  5. Step 5: Solve for x
    x = 35,107.53/196.02
  6. Step 6: Final answer
    x = 179.10

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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.