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Finding the Fourth Proportional to 41.99, 62.97 and 11.55

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Solution

The fourth proportional to 41.99, 62.97 and 11.55 is: 17.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.99 : 62.97 = 11.55 : x
  2. Step 2: Convert to fraction form
    41.99/62.97 = 11.55/x
  3. Step 3: Cross multiply
    41.99x = 62.97 × 11.55
  4. Step 4: Simplify right side
    41.99x = 727.41
  5. Step 5: Solve for x
    x = 727.41/41.99
  6. Step 6: Final answer
    x = 17.33

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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.