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Finding the Fourth Proportional to 132.98, 182.25 and 128.86

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Solution

The fourth proportional to 132.98, 182.25 and 128.86 is: 176.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.98 : 182.25 = 128.86 : x
  2. Step 2: Convert to fraction form
    132.98/182.25 = 128.86/x
  3. Step 3: Cross multiply
    132.98x = 182.25 × 128.86
  4. Step 4: Simplify right side
    132.98x = 23,484.28
  5. Step 5: Solve for x
    x = 23,484.28/132.98
  6. Step 6: Final answer
    x = 176.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.