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Finding the Third Proportional to 19.75 and 49.50

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Solution

The third proportional to 19.75 and 49.50 is: 124.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19.75 : 49.50 = 49.50 : x
  2. Step 2: Convert to fraction form
    19.75/49.50 = 49.50/x
  3. Step 3: Cross multiply
    19.75x = 49.50 × 49.50
  4. Step 4: Simplify right side
    19.75x = 2,450.25
  5. Step 5: Solve for x
    x = 2,450.25/19.75
  6. Step 6: Final answer
    x = 124.06

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Why These Related Problems?

These problems maintain the same ratio (2.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.