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Finding the Third Proportional to 122.63 and 273.75

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Solution

The third proportional to 122.63 and 273.75 is: 611.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.63 : 273.75 = 273.75 : x
  2. Step 2: Convert to fraction form
    122.63/273.75 = 273.75/x
  3. Step 3: Cross multiply
    122.63x = 273.75 × 273.75
  4. Step 4: Simplify right side
    122.63x = 74,939.06
  5. Step 5: Solve for x
    x = 74,939.06/122.63
  6. Step 6: Final answer
    x = 611.12

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.