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Finding the Fourth Proportional to 73.95, 110.38 and 69.39

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Solution

The fourth proportional to 73.95, 110.38 and 69.39 is: 103.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.95 : 110.38 = 69.39 : x
  2. Step 2: Convert to fraction form
    73.95/110.38 = 69.39/x
  3. Step 3: Cross multiply
    73.95x = 110.38 × 69.39
  4. Step 4: Simplify right side
    73.95x = 7,659.27
  5. Step 5: Solve for x
    x = 7,659.27/73.95
  6. Step 6: Final answer
    x = 103.57

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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.