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Finding the Fourth Proportional to 68.60, 103.46 and 63.44

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Solution

The fourth proportional to 68.60, 103.46 and 63.44 is: 95.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.60 : 103.46 = 63.44 : x
  2. Step 2: Convert to fraction form
    68.60/103.46 = 63.44/x
  3. Step 3: Cross multiply
    68.60x = 103.46 × 63.44
  4. Step 4: Simplify right side
    68.60x = 6,563.50
  5. Step 5: Solve for x
    x = 6,563.50/68.60
  6. Step 6: Final answer
    x = 95.68

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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.