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Finding the Third Proportional to 75.69 and 108.06

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Solution

The third proportional to 75.69 and 108.06 is: 154.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.69 : 108.06 = 108.06 : x
  2. Step 2: Convert to fraction form
    75.69/108.06 = 108.06/x
  3. Step 3: Cross multiply
    75.69x = 108.06 × 108.06
  4. Step 4: Simplify right side
    75.69x = 11,677.50
  5. Step 5: Solve for x
    x = 11,677.50/75.69
  6. Step 6: Final answer
    x = 154.29

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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.