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Finding the Third Proportional to 221.44 and 370.97

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Solution

The third proportional to 221.44 and 370.97 is: 621.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.44 : 370.97 = 370.97 : x
  2. Step 2: Convert to fraction form
    221.44/370.97 = 370.97/x
  3. Step 3: Cross multiply
    221.44x = 370.97 × 370.97
  4. Step 4: Simplify right side
    221.44x = 137,617.81
  5. Step 5: Solve for x
    x = 137,617.81/221.44
  6. Step 6: Final answer
    x = 621.47

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Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.