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Finding the Fourth Proportional to 44.74, 67.13 and 12.68

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Solution

The fourth proportional to 44.74, 67.13 and 12.68 is: 19.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.74 : 67.13 = 12.68 : x
  2. Step 2: Convert to fraction form
    44.74/67.13 = 12.68/x
  3. Step 3: Cross multiply
    44.74x = 67.13 × 12.68
  4. Step 4: Simplify right side
    44.74x = 851.19
  5. Step 5: Solve for x
    x = 851.19/44.74
  6. Step 6: Final answer
    x = 19.02

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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.