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Finding the Fourth Proportional to 67.73, 92.86 and 66.52

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Solution

The fourth proportional to 67.73, 92.86 and 66.52 is: 91.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.73 : 92.86 = 66.52 : x
  2. Step 2: Convert to fraction form
    67.73/92.86 = 66.52/x
  3. Step 3: Cross multiply
    67.73x = 92.86 × 66.52
  4. Step 4: Simplify right side
    67.73x = 6,176.25
  5. Step 5: Solve for x
    x = 6,176.25/67.73
  6. Step 6: Final answer
    x = 91.19

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.