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Finding the Fourth Proportional to 69.62, 103.91 and 60.49

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Solution

The fourth proportional to 69.62, 103.91 and 60.49 is: 90.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.62 : 103.91 = 60.49 : x
  2. Step 2: Convert to fraction form
    69.62/103.91 = 60.49/x
  3. Step 3: Cross multiply
    69.62x = 103.91 × 60.49
  4. Step 4: Simplify right side
    69.62x = 6,285.00
  5. Step 5: Solve for x
    x = 6,285.00/69.62
  6. Step 6: Final answer
    x = 90.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.