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Finding the Fourth Proportional to 42.12, 57.62 and 41.94

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Solution

The fourth proportional to 42.12, 57.62 and 41.94 is: 57.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.12 : 57.62 = 41.94 : x
  2. Step 2: Convert to fraction form
    42.12/57.62 = 41.94/x
  3. Step 3: Cross multiply
    42.12x = 57.62 × 41.94
  4. Step 4: Simplify right side
    42.12x = 2,416.37
  5. Step 5: Solve for x
    x = 2,416.37/42.12
  6. Step 6: Final answer
    x = 57.37

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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.