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Finding the Fourth Proportional to 69.60, 95.44 and 67.98

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Solution

The fourth proportional to 69.60, 95.44 and 67.98 is: 93.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.60 : 95.44 = 67.98 : x
  2. Step 2: Convert to fraction form
    69.60/95.44 = 67.98/x
  3. Step 3: Cross multiply
    69.60x = 95.44 × 67.98
  4. Step 4: Simplify right side
    69.60x = 6,488.01
  5. Step 5: Solve for x
    x = 6,488.01/69.60
  6. Step 6: Final answer
    x = 93.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.