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Finding the Fourth Proportional to 41.45, 62.13 and 19.74

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Solution

The fourth proportional to 41.45, 62.13 and 19.74 is: 29.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.45 : 62.13 = 19.74 : x
  2. Step 2: Convert to fraction form
    41.45/62.13 = 19.74/x
  3. Step 3: Cross multiply
    41.45x = 62.13 × 19.74
  4. Step 4: Simplify right side
    41.45x = 1,226.66
  5. Step 5: Solve for x
    x = 1,226.66/41.45
  6. Step 6: Final answer
    x = 29.60

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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.