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Finding the Third Proportional to 3.64 and 5.55

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Solution

The third proportional to 3.64 and 5.55 is: 8.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.64 : 5.55 = 5.55 : x
  2. Step 2: Convert to fraction form
    3.64/5.55 = 5.55/x
  3. Step 3: Cross multiply
    3.64x = 5.55 × 5.55
  4. Step 4: Simplify right side
    3.64x = 30.80
  5. Step 5: Solve for x
    x = 30.80/3.64
  6. Step 6: Final answer
    x = 8.47

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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.