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Finding the Third Proportional to 130.13 and 180.84

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Solution

The third proportional to 130.13 and 180.84 is: 251.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.13 : 180.84 = 180.84 : x
  2. Step 2: Convert to fraction form
    130.13/180.84 = 180.84/x
  3. Step 3: Cross multiply
    130.13x = 180.84 × 180.84
  4. Step 4: Simplify right side
    130.13x = 32,704.46
  5. Step 5: Solve for x
    x = 32,704.46/130.13
  6. Step 6: Final answer
    x = 251.33

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.