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Finding the Third Proportional to 139.22 and 267.05

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Solution

The third proportional to 139.22 and 267.05 is: 512.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.22 : 267.05 = 267.05 : x
  2. Step 2: Convert to fraction form
    139.22/267.05 = 267.05/x
  3. Step 3: Cross multiply
    139.22x = 267.05 × 267.05
  4. Step 4: Simplify right side
    139.22x = 71,314.03
  5. Step 5: Solve for x
    x = 71,314.03/139.22
  6. Step 6: Final answer
    x = 512.24

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Why These Related Problems?

These problems maintain the same ratio (1.92) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.