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Finding the Third Proportional to 75.75 and 110.50

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Solution

The third proportional to 75.75 and 110.50 is: 161.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.75 : 110.50 = 110.50 : x
  2. Step 2: Convert to fraction form
    75.75/110.50 = 110.50/x
  3. Step 3: Cross multiply
    75.75x = 110.50 × 110.50
  4. Step 4: Simplify right side
    75.75x = 12,210.25
  5. Step 5: Solve for x
    x = 12,210.25/75.75
  6. Step 6: Final answer
    x = 161.19

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.