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Finding the Third Proportional to 80.63 and 107.63

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Solution

The third proportional to 80.63 and 107.63 is: 143.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.63 : 107.63 = 107.63 : x
  2. Step 2: Convert to fraction form
    80.63/107.63 = 107.63/x
  3. Step 3: Cross multiply
    80.63x = 107.63 × 107.63
  4. Step 4: Simplify right side
    80.63x = 11,583.14
  5. Step 5: Solve for x
    x = 11,583.14/80.63
  6. Step 6: Final answer
    x = 143.67

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.