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Finding the Third Proportional to 1.98 and 4.79

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Solution

The third proportional to 1.98 and 4.79 is: 11.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1.98 : 4.79 = 4.79 : x
  2. Step 2: Convert to fraction form
    1.98/4.79 = 4.79/x
  3. Step 3: Cross multiply
    1.98x = 4.79 × 4.79
  4. Step 4: Simplify right side
    1.98x = 22.99
  5. Step 5: Solve for x
    x = 22.99/1.98
  6. Step 6: Final answer
    x = 11.62

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.