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Finding the Fourth Proportional to 68.55, 94.02 and 67.41

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Solution

The fourth proportional to 68.55, 94.02 and 67.41 is: 92.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.55 : 94.02 = 67.41 : x
  2. Step 2: Convert to fraction form
    68.55/94.02 = 67.41/x
  3. Step 3: Cross multiply
    68.55x = 94.02 × 67.41
  4. Step 4: Simplify right side
    68.55x = 6,337.89
  5. Step 5: Solve for x
    x = 6,337.89/68.55
  6. Step 6: Final answer
    x = 92.46

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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.