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Finding the Fourth Proportional to 550.72, 824.04 and 330.55

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Solution

The fourth proportional to 550.72, 824.04 and 330.55 is: 494.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.72 : 824.04 = 330.55 : x
  2. Step 2: Convert to fraction form
    550.72/824.04 = 330.55/x
  3. Step 3: Cross multiply
    550.72x = 824.04 × 330.55
  4. Step 4: Simplify right side
    550.72x = 272,386.42
  5. Step 5: Solve for x
    x = 272,386.42/550.72
  6. Step 6: Final answer
    x = 494.60

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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.