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Finding the Fourth Proportional to 619.20, 927.45 and 330.03

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Solution

The fourth proportional to 619.20, 927.45 and 330.03 is: 494.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.20 : 927.45 = 330.03 : x
  2. Step 2: Convert to fraction form
    619.20/927.45 = 330.03/x
  3. Step 3: Cross multiply
    619.20x = 927.45 × 330.03
  4. Step 4: Simplify right side
    619.20x = 306,086.32
  5. Step 5: Solve for x
    x = 306,086.32/619.20
  6. Step 6: Final answer
    x = 494.33

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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.