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Finding the Fourth Proportional to 41.44, 62.14 and 21.12

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Solution

The fourth proportional to 41.44, 62.14 and 21.12 is: 31.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.44 : 62.14 = 21.12 : x
  2. Step 2: Convert to fraction form
    41.44/62.14 = 21.12/x
  3. Step 3: Cross multiply
    41.44x = 62.14 × 21.12
  4. Step 4: Simplify right side
    41.44x = 1,312.40
  5. Step 5: Solve for x
    x = 1,312.40/41.44
  6. Step 6: Final answer
    x = 31.67

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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.