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Finding the Third Proportional to 192.38 and 254.39

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Solution

The third proportional to 192.38 and 254.39 is: 336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.38 : 254.39 = 254.39 : x
  2. Step 2: Convert to fraction form
    192.38/254.39 = 254.39/x
  3. Step 3: Cross multiply
    192.38x = 254.39 × 254.39
  4. Step 4: Simplify right side
    192.38x = 64,714.59
  5. Step 5: Solve for x
    x = 64,714.59/192.38
  6. Step 6: Final answer
    x = 336.40

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.