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Finding the Third Proportional to 3.10 and 4.74

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Solution

The third proportional to 3.10 and 4.74 is: 7.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.10 : 4.74 = 4.74 : x
  2. Step 2: Convert to fraction form
    3.10/4.74 = 4.74/x
  3. Step 3: Cross multiply
    3.10x = 4.74 × 4.74
  4. Step 4: Simplify right side
    3.10x = 22.51
  5. Step 5: Solve for x
    x = 22.51/3.10
  6. Step 6: Final answer
    x = 7.27

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.