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Finding the Fourth Proportional to 69.22, 94.82 and 68.50

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Solution

The fourth proportional to 69.22, 94.82 and 68.50 is: 93.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.22 : 94.82 = 68.50 : x
  2. Step 2: Convert to fraction form
    69.22/94.82 = 68.50/x
  3. Step 3: Cross multiply
    69.22x = 94.82 × 68.50
  4. Step 4: Simplify right side
    69.22x = 6,495.17
  5. Step 5: Solve for x
    x = 6,495.17/69.22
  6. Step 6: Final answer
    x = 93.83

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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.