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Finding the Fourth Proportional to 41.41, 57.21 and 30.58

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Solution

The fourth proportional to 41.41, 57.21 and 30.58 is: 42.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.41 : 57.21 = 30.58 : x
  2. Step 2: Convert to fraction form
    41.41/57.21 = 30.58/x
  3. Step 3: Cross multiply
    41.41x = 57.21 × 30.58
  4. Step 4: Simplify right side
    41.41x = 1,749.22
  5. Step 5: Solve for x
    x = 1,749.22/41.41
  6. Step 6: Final answer
    x = 42.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.