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Finding the Third Proportional to 189.56 and 273.94

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Solution

The third proportional to 189.56 and 273.94 is: 395.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.56 : 273.94 = 273.94 : x
  2. Step 2: Convert to fraction form
    189.56/273.94 = 273.94/x
  3. Step 3: Cross multiply
    189.56x = 273.94 × 273.94
  4. Step 4: Simplify right side
    189.56x = 75,041.75
  5. Step 5: Solve for x
    x = 75,041.75/189.56
  6. Step 6: Final answer
    x = 395.87

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.