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Finding the Third Proportional to 99.94 and 206.84

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Solution

The third proportional to 99.94 and 206.84 is: 428.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.94 : 206.84 = 206.84 : x
  2. Step 2: Convert to fraction form
    99.94/206.84 = 206.84/x
  3. Step 3: Cross multiply
    99.94x = 206.84 × 206.84
  4. Step 4: Simplify right side
    99.94x = 42,784.34
  5. Step 5: Solve for x
    x = 42,784.34/99.94
  6. Step 6: Final answer
    x = 428.11

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.