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Finding the Fourth Proportional to 483.96, 726.42 and 330.12

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Solution

The fourth proportional to 483.96, 726.42 and 330.12 is: 495.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.96 : 726.42 = 330.12 : x
  2. Step 2: Convert to fraction form
    483.96/726.42 = 330.12/x
  3. Step 3: Cross multiply
    483.96x = 726.42 × 330.12
  4. Step 4: Simplify right side
    483.96x = 239,805.77
  5. Step 5: Solve for x
    x = 239,805.77/483.96
  6. Step 6: Final answer
    x = 495.51

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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.