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Finding the Third Proportional to 149.06 and 215.44

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Solution

The third proportional to 149.06 and 215.44 is: 311.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.06 : 215.44 = 215.44 : x
  2. Step 2: Convert to fraction form
    149.06/215.44 = 215.44/x
  3. Step 3: Cross multiply
    149.06x = 215.44 × 215.44
  4. Step 4: Simplify right side
    149.06x = 46,413.32
  5. Step 5: Solve for x
    x = 46,413.32/149.06
  6. Step 6: Final answer
    x = 311.37

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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.