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Finding the Fourth Proportional to 539.17, 809.04 and 214.54

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Solution

The fourth proportional to 539.17, 809.04 and 214.54 is: 321.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.17 : 809.04 = 214.54 : x
  2. Step 2: Convert to fraction form
    539.17/809.04 = 214.54/x
  3. Step 3: Cross multiply
    539.17x = 809.04 × 214.54
  4. Step 4: Simplify right side
    539.17x = 173,567.40
  5. Step 5: Solve for x
    x = 173,567.40/539.17
  6. Step 6: Final answer
    x = 321.92

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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.