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Finding the Fourth Proportional to 69.32, 94.83 and 68.06

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Solution

The fourth proportional to 69.32, 94.83 and 68.06 is: 93.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.32 : 94.83 = 68.06 : x
  2. Step 2: Convert to fraction form
    69.32/94.83 = 68.06/x
  3. Step 3: Cross multiply
    69.32x = 94.83 × 68.06
  4. Step 4: Simplify right side
    69.32x = 6,454.13
  5. Step 5: Solve for x
    x = 6,454.13/69.32
  6. Step 6: Final answer
    x = 93.11

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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.