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Finding the Third Proportional to 4.39 and 9.43

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Solution

The third proportional to 4.39 and 9.43 is: 20.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.39 : 9.43 = 9.43 : x
  2. Step 2: Convert to fraction form
    4.39/9.43 = 9.43/x
  3. Step 3: Cross multiply
    4.39x = 9.43 × 9.43
  4. Step 4: Simplify right side
    4.39x = 88.88
  5. Step 5: Solve for x
    x = 88.88/4.39
  6. Step 6: Final answer
    x = 20.25

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.