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Finding the Fourth Proportional to 376.28, 564.20 and 330.72

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Solution

The fourth proportional to 376.28, 564.20 and 330.72 is: 495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.28 : 564.20 = 330.72 : x
  2. Step 2: Convert to fraction form
    376.28/564.20 = 330.72/x
  3. Step 3: Cross multiply
    376.28x = 564.20 × 330.72
  4. Step 4: Simplify right side
    376.28x = 186,592.22
  5. Step 5: Solve for x
    x = 186,592.22/376.28
  6. Step 6: Final answer
    x = 495.89

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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.