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Finding the Fourth Proportional to 73.67, 109.83 and 69.62

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Solution

The fourth proportional to 73.67, 109.83 and 69.62 is: 103.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.67 : 109.83 = 69.62 : x
  2. Step 2: Convert to fraction form
    73.67/109.83 = 69.62/x
  3. Step 3: Cross multiply
    73.67x = 109.83 × 69.62
  4. Step 4: Simplify right side
    73.67x = 7,646.02
  5. Step 5: Solve for x
    x = 7,646.02/73.67
  6. Step 6: Final answer
    x = 103.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.