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Finding the Fourth Proportional to 382.02, 571.65 and 330.83

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Solution

The fourth proportional to 382.02, 571.65 and 330.83 is: 495.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.02 : 571.65 = 330.83 : x
  2. Step 2: Convert to fraction form
    382.02/571.65 = 330.83/x
  3. Step 3: Cross multiply
    382.02x = 571.65 × 330.83
  4. Step 4: Simplify right side
    382.02x = 189,118.97
  5. Step 5: Solve for x
    x = 189,118.97/382.02
  6. Step 6: Final answer
    x = 495.06

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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.