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Finding the Third Proportional to 134.94 and 206.38

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Solution

The third proportional to 134.94 and 206.38 is: 315.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.94 : 206.38 = 206.38 : x
  2. Step 2: Convert to fraction form
    134.94/206.38 = 206.38/x
  3. Step 3: Cross multiply
    134.94x = 206.38 × 206.38
  4. Step 4: Simplify right side
    134.94x = 42,590.64
  5. Step 5: Solve for x
    x = 42,590.64/134.94
  6. Step 6: Final answer
    x = 315.63

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.