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Finding the Fourth Proportional to 41.99, 58.19 and 39.35

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Solution

The fourth proportional to 41.99, 58.19 and 39.35 is: 54.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.99 : 58.19 = 39.35 : x
  2. Step 2: Convert to fraction form
    41.99/58.19 = 39.35/x
  3. Step 3: Cross multiply
    41.99x = 58.19 × 39.35
  4. Step 4: Simplify right side
    41.99x = 2,289.73
  5. Step 5: Solve for x
    x = 2,289.73/41.99
  6. Step 6: Final answer
    x = 54.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.