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Finding the Fourth Proportional to 132.70, 197.98 and 118.08

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Solution

The fourth proportional to 132.70, 197.98 and 118.08 is: 176.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.70 : 197.98 = 118.08 : x
  2. Step 2: Convert to fraction form
    132.70/197.98 = 118.08/x
  3. Step 3: Cross multiply
    132.70x = 197.98 × 118.08
  4. Step 4: Simplify right side
    132.70x = 23,377.85
  5. Step 5: Solve for x
    x = 23,377.85/132.70
  6. Step 6: Final answer
    x = 176.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.