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Finding the Fourth Proportional to 68.23, 94.16 and 38.73

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Solution

The fourth proportional to 68.23, 94.16 and 38.73 is: 53.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.23 : 94.16 = 38.73 : x
  2. Step 2: Convert to fraction form
    68.23/94.16 = 38.73/x
  3. Step 3: Cross multiply
    68.23x = 94.16 × 38.73
  4. Step 4: Simplify right side
    68.23x = 3,646.62
  5. Step 5: Solve for x
    x = 3,646.62/68.23
  6. Step 6: Final answer
    x = 53.45

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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.