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Finding the Fourth Proportional to 41.34, 61.99 and 12.45

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Solution

The fourth proportional to 41.34, 61.99 and 12.45 is: 18.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.34 : 61.99 = 12.45 : x
  2. Step 2: Convert to fraction form
    41.34/61.99 = 12.45/x
  3. Step 3: Cross multiply
    41.34x = 61.99 × 12.45
  4. Step 4: Simplify right side
    41.34x = 771.78
  5. Step 5: Solve for x
    x = 771.78/41.34
  6. Step 6: Final answer
    x = 18.67

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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.