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Finding the Third Proportional to 2.51 and 3.05

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Solution

The third proportional to 2.51 and 3.05 is: 3.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.51 : 3.05 = 3.05 : x
  2. Step 2: Convert to fraction form
    2.51/3.05 = 3.05/x
  3. Step 3: Cross multiply
    2.51x = 3.05 × 3.05
  4. Step 4: Simplify right side
    2.51x = 9.29
  5. Step 5: Solve for x
    x = 9.29/2.51
  6. Step 6: Final answer
    x = 3.70

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.