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Finding the Fourth Proportional to 68.53, 102.79 and 32.44

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Solution

The fourth proportional to 68.53, 102.79 and 32.44 is: 48.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.53 : 102.79 = 32.44 : x
  2. Step 2: Convert to fraction form
    68.53/102.79 = 32.44/x
  3. Step 3: Cross multiply
    68.53x = 102.79 × 32.44
  4. Step 4: Simplify right side
    68.53x = 3,333.91
  5. Step 5: Solve for x
    x = 3,333.91/68.53
  6. Step 6: Final answer
    x = 48.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.