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Finding the Fourth Proportional to 68.95, 94.52 and 68.48

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Solution

The fourth proportional to 68.95, 94.52 and 68.48 is: 93.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.95 : 94.52 = 68.48 : x
  2. Step 2: Convert to fraction form
    68.95/94.52 = 68.48/x
  3. Step 3: Cross multiply
    68.95x = 94.52 × 68.48
  4. Step 4: Simplify right side
    68.95x = 6,472.39
  5. Step 5: Solve for x
    x = 6,472.39/68.95
  6. Step 6: Final answer
    x = 93.87

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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.