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Finding the Fourth Proportional to 69.76, 96.88 and 69.44

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Solution

The fourth proportional to 69.76, 96.88 and 69.44 is: 96.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.76 : 96.88 = 69.44 : x
  2. Step 2: Convert to fraction form
    69.76/96.88 = 69.44/x
  3. Step 3: Cross multiply
    69.76x = 96.88 × 69.44
  4. Step 4: Simplify right side
    69.76x = 6,727.35
  5. Step 5: Solve for x
    x = 6,727.35/69.76
  6. Step 6: Final answer
    x = 96.44

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.