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Finding the Fourth Proportional to 69.06, 94.82 and 58.66

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Solution

The fourth proportional to 69.06, 94.82 and 58.66 is: 80.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.06 : 94.82 = 58.66 : x
  2. Step 2: Convert to fraction form
    69.06/94.82 = 58.66/x
  3. Step 3: Cross multiply
    69.06x = 94.82 × 58.66
  4. Step 4: Simplify right side
    69.06x = 5,562.14
  5. Step 5: Solve for x
    x = 5,562.14/69.06
  6. Step 6: Final answer
    x = 80.55

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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.