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Finding the Third Proportional to 74.81 and 104.06

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Solution

The third proportional to 74.81 and 104.06 is: 144.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.81 : 104.06 = 104.06 : x
  2. Step 2: Convert to fraction form
    74.81/104.06 = 104.06/x
  3. Step 3: Cross multiply
    74.81x = 104.06 × 104.06
  4. Step 4: Simplify right side
    74.81x = 10,829.00
  5. Step 5: Solve for x
    x = 10,829.00/74.81
  6. Step 6: Final answer
    x = 144.75

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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.