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Finding the Fourth Proportional to 67.59, 92.52 and 67.05

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Solution

The fourth proportional to 67.59, 92.52 and 67.05 is: 91.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.59 : 92.52 = 67.05 : x
  2. Step 2: Convert to fraction form
    67.59/92.52 = 67.05/x
  3. Step 3: Cross multiply
    67.59x = 92.52 × 67.05
  4. Step 4: Simplify right side
    67.59x = 6,203.47
  5. Step 5: Solve for x
    x = 6,203.47/67.59
  6. Step 6: Final answer
    x = 91.78

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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.