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Finding the Fourth Proportional to 69.60, 104.94 and 60.99

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Solution

The fourth proportional to 69.60, 104.94 and 60.99 is: 91.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.60 : 104.94 = 60.99 : x
  2. Step 2: Convert to fraction form
    69.60/104.94 = 60.99/x
  3. Step 3: Cross multiply
    69.60x = 104.94 × 60.99
  4. Step 4: Simplify right side
    69.60x = 6,400.29
  5. Step 5: Solve for x
    x = 6,400.29/69.60
  6. Step 6: Final answer
    x = 91.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.