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Finding the Third Proportional to 4.70 and 11.05

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Solution

The third proportional to 4.70 and 11.05 is: 25.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.70 : 11.05 = 11.05 : x
  2. Step 2: Convert to fraction form
    4.70/11.05 = 11.05/x
  3. Step 3: Cross multiply
    4.70x = 11.05 × 11.05
  4. Step 4: Simplify right side
    4.70x = 122.04
  5. Step 5: Solve for x
    x = 122.04/4.70
  6. Step 6: Final answer
    x = 25.94

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.