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Finding the Third Proportional to 4.71 and 10.05

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Solution

The third proportional to 4.71 and 10.05 is: 21.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.71 : 10.05 = 10.05 : x
  2. Step 2: Convert to fraction form
    4.71/10.05 = 10.05/x
  3. Step 3: Cross multiply
    4.71x = 10.05 × 10.05
  4. Step 4: Simplify right side
    4.71x = 101.10
  5. Step 5: Solve for x
    x = 101.10/4.71
  6. Step 6: Final answer
    x = 21.46

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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.