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Finding the Fourth Proportional to 613.35, 844.92 and 447.12

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Solution

The fourth proportional to 613.35, 844.92 and 447.12 is: 615.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.35 : 844.92 = 447.12 : x
  2. Step 2: Convert to fraction form
    613.35/844.92 = 447.12/x
  3. Step 3: Cross multiply
    613.35x = 844.92 × 447.12
  4. Step 4: Simplify right side
    613.35x = 377,780.63
  5. Step 5: Solve for x
    x = 377,780.63/613.35
  6. Step 6: Final answer
    x = 615.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.