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Finding the Fourth Proportional to 69.95, 104.67 and 69.75

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Solution

The fourth proportional to 69.95, 104.67 and 69.75 is: 104.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.95 : 104.67 = 69.75 : x
  2. Step 2: Convert to fraction form
    69.95/104.67 = 69.75/x
  3. Step 3: Cross multiply
    69.95x = 104.67 × 69.75
  4. Step 4: Simplify right side
    69.95x = 7,300.73
  5. Step 5: Solve for x
    x = 7,300.73/69.95
  6. Step 6: Final answer
    x = 104.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.