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Finding the Fourth Proportional to 619.45, 927.82 and 481.42

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Solution

The fourth proportional to 619.45, 927.82 and 481.42 is: 721.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.45 : 927.82 = 481.42 : x
  2. Step 2: Convert to fraction form
    619.45/927.82 = 481.42/x
  3. Step 3: Cross multiply
    619.45x = 927.82 × 481.42
  4. Step 4: Simplify right side
    619.45x = 446,671.10
  5. Step 5: Solve for x
    x = 446,671.10/619.45
  6. Step 6: Final answer
    x = 721.08

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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.