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Finding the Third Proportional to 199.13 and 228.09

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Solution

The third proportional to 199.13 and 228.09 is: 261.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.13 : 228.09 = 228.09 : x
  2. Step 2: Convert to fraction form
    199.13/228.09 = 228.09/x
  3. Step 3: Cross multiply
    199.13x = 228.09 × 228.09
  4. Step 4: Simplify right side
    199.13x = 52,026.76
  5. Step 5: Solve for x
    x = 52,026.76/199.13
  6. Step 6: Final answer
    x = 261.28

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.