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Finding the Third Proportional to 184.25 and 278.75

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Solution

The third proportional to 184.25 and 278.75 is: 421.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.25 : 278.75 = 278.75 : x
  2. Step 2: Convert to fraction form
    184.25/278.75 = 278.75/x
  3. Step 3: Cross multiply
    184.25x = 278.75 × 278.75
  4. Step 4: Simplify right side
    184.25x = 77,701.56
  5. Step 5: Solve for x
    x = 77,701.56/184.25
  6. Step 6: Final answer
    x = 421.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.