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Finding the Fourth Proportional to 539.76, 808.56 and 323.22

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Solution

The fourth proportional to 539.76, 808.56 and 323.22 is: 484.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.76 : 808.56 = 323.22 : x
  2. Step 2: Convert to fraction form
    539.76/808.56 = 323.22/x
  3. Step 3: Cross multiply
    539.76x = 808.56 × 323.22
  4. Step 4: Simplify right side
    539.76x = 261,342.76
  5. Step 5: Solve for x
    x = 261,342.76/539.76
  6. Step 6: Final answer
    x = 484.18

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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.