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Finding the Fourth Proportional to 69.22, 95.46 and 48.56

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Solution

The fourth proportional to 69.22, 95.46 and 48.56 is: 66.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.22 : 95.46 = 48.56 : x
  2. Step 2: Convert to fraction form
    69.22/95.46 = 48.56/x
  3. Step 3: Cross multiply
    69.22x = 95.46 × 48.56
  4. Step 4: Simplify right side
    69.22x = 4,635.54
  5. Step 5: Solve for x
    x = 4,635.54/69.22
  6. Step 6: Final answer
    x = 66.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.