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Finding the Fourth Proportional to 69.66, 104.55 and 37.19

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Solution

The fourth proportional to 69.66, 104.55 and 37.19 is: 55.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.66 : 104.55 = 37.19 : x
  2. Step 2: Convert to fraction form
    69.66/104.55 = 37.19/x
  3. Step 3: Cross multiply
    69.66x = 104.55 × 37.19
  4. Step 4: Simplify right side
    69.66x = 3,887.87
  5. Step 5: Solve for x
    x = 3,887.87/69.66
  6. Step 6: Final answer
    x = 55.81

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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.