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Finding the Fourth Proportional to 539.72, 808.60 and 333.88

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Solution

The fourth proportional to 539.72, 808.60 and 333.88 is: 500.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.72 : 808.60 = 333.88 : x
  2. Step 2: Convert to fraction form
    539.72/808.60 = 333.88/x
  3. Step 3: Cross multiply
    539.72x = 808.60 × 333.88
  4. Step 4: Simplify right side
    539.72x = 269,975.37
  5. Step 5: Solve for x
    x = 269,975.37/539.72
  6. Step 6: Final answer
    x = 500.21

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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.