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Finding the Fourth Proportional to 68.56, 103.24 and 63.44

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Solution

The fourth proportional to 68.56, 103.24 and 63.44 is: 95.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.56 : 103.24 = 63.44 : x
  2. Step 2: Convert to fraction form
    68.56/103.24 = 63.44/x
  3. Step 3: Cross multiply
    68.56x = 103.24 × 63.44
  4. Step 4: Simplify right side
    68.56x = 6,549.55
  5. Step 5: Solve for x
    x = 6,549.55/68.56
  6. Step 6: Final answer
    x = 95.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.