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Finding the Fourth Proportional to 484.56, 726.43 and 330.05

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Solution

The fourth proportional to 484.56, 726.43 and 330.05 is: 494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.56 : 726.43 = 330.05 : x
  2. Step 2: Convert to fraction form
    484.56/726.43 = 330.05/x
  3. Step 3: Cross multiply
    484.56x = 726.43 × 330.05
  4. Step 4: Simplify right side
    484.56x = 239,758.22
  5. Step 5: Solve for x
    x = 239,758.22/484.56
  6. Step 6: Final answer
    x = 494.80

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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.