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Finding the Fourth Proportional to 69.32, 96.29 and 68.68

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Solution

The fourth proportional to 69.32, 96.29 and 68.68 is: 95.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.32 : 96.29 = 68.68 : x
  2. Step 2: Convert to fraction form
    69.32/96.29 = 68.68/x
  3. Step 3: Cross multiply
    69.32x = 96.29 × 68.68
  4. Step 4: Simplify right side
    69.32x = 6,613.23
  5. Step 5: Solve for x
    x = 6,613.23/69.32
  6. Step 6: Final answer
    x = 95.40

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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.