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Finding the Third Proportional to 3.56 and 5.53

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Solution

The third proportional to 3.56 and 5.53 is: 8.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.56 : 5.53 = 5.53 : x
  2. Step 2: Convert to fraction form
    3.56/5.53 = 5.53/x
  3. Step 3: Cross multiply
    3.56x = 5.53 × 5.53
  4. Step 4: Simplify right side
    3.56x = 30.59
  5. Step 5: Solve for x
    x = 30.59/3.56
  6. Step 6: Final answer
    x = 8.59

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.