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Finding the Fourth Proportional to 62.94, 94.41 and 20.19

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Solution

The fourth proportional to 62.94, 94.41 and 20.19 is: 30.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.94 : 94.41 = 20.19 : x
  2. Step 2: Convert to fraction form
    62.94/94.41 = 20.19/x
  3. Step 3: Cross multiply
    62.94x = 94.41 × 20.19
  4. Step 4: Simplify right side
    62.94x = 1,906.14
  5. Step 5: Solve for x
    x = 1,906.14/62.94
  6. Step 6: Final answer
    x = 30.29

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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.