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Finding the Third Proportional to 188.44 and 218.81

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Solution

The third proportional to 188.44 and 218.81 is: 254.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.44 : 218.81 = 218.81 : x
  2. Step 2: Convert to fraction form
    188.44/218.81 = 218.81/x
  3. Step 3: Cross multiply
    188.44x = 218.81 × 218.81
  4. Step 4: Simplify right side
    188.44x = 47,878.91
  5. Step 5: Solve for x
    x = 47,878.91/188.44
  6. Step 6: Final answer
    x = 254.08

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.