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Finding the Fourth Proportional to 539.53, 807.27 and 330.55

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Solution

The fourth proportional to 539.53, 807.27 and 330.55 is: 494.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.53 : 807.27 = 330.55 : x
  2. Step 2: Convert to fraction form
    539.53/807.27 = 330.55/x
  3. Step 3: Cross multiply
    539.53x = 807.27 × 330.55
  4. Step 4: Simplify right side
    539.53x = 266,843.10
  5. Step 5: Solve for x
    x = 266,843.10/539.53
  6. Step 6: Final answer
    x = 494.58

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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.