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Finding the Third Proportional to 18.75 and 49.75

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Solution

The third proportional to 18.75 and 49.75 is: 132.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.75 : 49.75 = 49.75 : x
  2. Step 2: Convert to fraction form
    18.75/49.75 = 49.75/x
  3. Step 3: Cross multiply
    18.75x = 49.75 × 49.75
  4. Step 4: Simplify right side
    18.75x = 2,475.06
  5. Step 5: Solve for x
    x = 2,475.06/18.75
  6. Step 6: Final answer
    x = 132.00

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Why These Related Problems?

These problems maintain the same ratio (2.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.