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Finding the Third Proportional to 4.45 and 9.47

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Solution

The third proportional to 4.45 and 9.47 is: 20.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.45 : 9.47 = 9.47 : x
  2. Step 2: Convert to fraction form
    4.45/9.47 = 9.47/x
  3. Step 3: Cross multiply
    4.45x = 9.47 × 9.47
  4. Step 4: Simplify right side
    4.45x = 89.66
  5. Step 5: Solve for x
    x = 89.66/4.45
  6. Step 6: Final answer
    x = 20.13

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.