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Finding the Fourth Proportional to 68.01, 93.18 and 67.11

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Solution

The fourth proportional to 68.01, 93.18 and 67.11 is: 91.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.01 : 93.18 = 67.11 : x
  2. Step 2: Convert to fraction form
    68.01/93.18 = 67.11/x
  3. Step 3: Cross multiply
    68.01x = 93.18 × 67.11
  4. Step 4: Simplify right side
    68.01x = 6,253.31
  5. Step 5: Solve for x
    x = 6,253.31/68.01
  6. Step 6: Final answer
    x = 91.95

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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.