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Finding the Fourth Proportional to 132.56, 197.80 and 118.93

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Solution

The fourth proportional to 132.56, 197.80 and 118.93 is: 177.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.56 : 197.80 = 118.93 : x
  2. Step 2: Convert to fraction form
    132.56/197.80 = 118.93/x
  3. Step 3: Cross multiply
    132.56x = 197.80 × 118.93
  4. Step 4: Simplify right side
    132.56x = 23,524.35
  5. Step 5: Solve for x
    x = 23,524.35/132.56
  6. Step 6: Final answer
    x = 177.46

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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.