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Finding the Third Proportional to 2.09 and 4.94

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Solution

The third proportional to 2.09 and 4.94 is: 11.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.09 : 4.94 = 4.94 : x
  2. Step 2: Convert to fraction form
    2.09/4.94 = 4.94/x
  3. Step 3: Cross multiply
    2.09x = 4.94 × 4.94
  4. Step 4: Simplify right side
    2.09x = 24.42
  5. Step 5: Solve for x
    x = 24.42/2.09
  6. Step 6: Final answer
    x = 11.68

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.