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Finding the Fourth Proportional to 68.91, 95.09 and 52.49

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Solution

The fourth proportional to 68.91, 95.09 and 52.49 is: 72.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.91 : 95.09 = 52.49 : x
  2. Step 2: Convert to fraction form
    68.91/95.09 = 52.49/x
  3. Step 3: Cross multiply
    68.91x = 95.09 × 52.49
  4. Step 4: Simplify right side
    68.91x = 4,990.54
  5. Step 5: Solve for x
    x = 4,990.54/68.91
  6. Step 6: Final answer
    x = 72.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.