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Finding the Third Proportional to 2.85 and 4.56

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Solution

The third proportional to 2.85 and 4.56 is: 7.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.85 : 4.56 = 4.56 : x
  2. Step 2: Convert to fraction form
    2.85/4.56 = 4.56/x
  3. Step 3: Cross multiply
    2.85x = 4.56 × 4.56
  4. Step 4: Simplify right side
    2.85x = 20.81
  5. Step 5: Solve for x
    x = 20.81/2.85
  6. Step 6: Final answer
    x = 7.30

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.