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Finding the Third Proportional to 5.59 and 8.60

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Solution

The third proportional to 5.59 and 8.60 is: 13.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.59 : 8.60 = 8.60 : x
  2. Step 2: Convert to fraction form
    5.59/8.60 = 8.60/x
  3. Step 3: Cross multiply
    5.59x = 8.60 × 8.60
  4. Step 4: Simplify right side
    5.59x = 73.89
  5. Step 5: Solve for x
    x = 73.89/5.59
  6. Step 6: Final answer
    x = 13.22

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.