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Finding the Fourth Proportional to 69.07, 103.38 and 63.61

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Solution

The fourth proportional to 69.07, 103.38 and 63.61 is: 95.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.07 : 103.38 = 63.61 : x
  2. Step 2: Convert to fraction form
    69.07/103.38 = 63.61/x
  3. Step 3: Cross multiply
    69.07x = 103.38 × 63.61
  4. Step 4: Simplify right side
    69.07x = 6,576.00
  5. Step 5: Solve for x
    x = 6,576.00/69.07
  6. Step 6: Final answer
    x = 95.21

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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.