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Finding the Fourth Proportional to 69.37, 94.91 and 68.17

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Solution

The fourth proportional to 69.37, 94.91 and 68.17 is: 93.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.37 : 94.91 = 68.17 : x
  2. Step 2: Convert to fraction form
    69.37/94.91 = 68.17/x
  3. Step 3: Cross multiply
    69.37x = 94.91 × 68.17
  4. Step 4: Simplify right side
    69.37x = 6,470.45
  5. Step 5: Solve for x
    x = 6,470.45/69.37
  6. Step 6: Final answer
    x = 93.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.