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Finding the Third Proportional to 90.60 and 129.44

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Solution

The third proportional to 90.60 and 129.44 is: 184.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90.60 : 129.44 = 129.44 : x
  2. Step 2: Convert to fraction form
    90.60/129.44 = 129.44/x
  3. Step 3: Cross multiply
    90.60x = 129.44 × 129.44
  4. Step 4: Simplify right side
    90.60x = 16,753.81
  5. Step 5: Solve for x
    x = 16,753.81/90.60
  6. Step 6: Final answer
    x = 184.93

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.