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Finding the Fourth Proportional to 132.98, 198.30 and 118.52

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Solution

The fourth proportional to 132.98, 198.30 and 118.52 is: 176.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.98 : 198.30 = 118.52 : x
  2. Step 2: Convert to fraction form
    132.98/198.30 = 118.52/x
  3. Step 3: Cross multiply
    132.98x = 198.30 × 118.52
  4. Step 4: Simplify right side
    132.98x = 23,502.52
  5. Step 5: Solve for x
    x = 23,502.52/132.98
  6. Step 6: Final answer
    x = 176.74

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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.