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Finding the Third Proportional to 55.50 and 105

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Solution

The third proportional to 55.50 and 105 is: 198.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.50 : 105 = 105 : x
  2. Step 2: Convert to fraction form
    55.50/105 = 105/x
  3. Step 3: Cross multiply
    55.50x = 105 × 105
  4. Step 4: Simplify right side
    55.50x = 11,025
  5. Step 5: Solve for x
    x = 11,025/55.50
  6. Step 6: Final answer
    x = 198.65

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.