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Finding the Fourth Proportional to 75.27, 112.68 and 73.98

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Solution

The fourth proportional to 75.27, 112.68 and 73.98 is: 110.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.27 : 112.68 = 73.98 : x
  2. Step 2: Convert to fraction form
    75.27/112.68 = 73.98/x
  3. Step 3: Cross multiply
    75.27x = 112.68 × 73.98
  4. Step 4: Simplify right side
    75.27x = 8,336.07
  5. Step 5: Solve for x
    x = 8,336.07/75.27
  6. Step 6: Final answer
    x = 110.75

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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.