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Finding the Fourth Proportional to 539.62, 809.32 and 247.02

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Solution

The fourth proportional to 539.62, 809.32 and 247.02 is: 370.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.62 : 809.32 = 247.02 : x
  2. Step 2: Convert to fraction form
    539.62/809.32 = 247.02/x
  3. Step 3: Cross multiply
    539.62x = 809.32 × 247.02
  4. Step 4: Simplify right side
    539.62x = 199,918.23
  5. Step 5: Solve for x
    x = 199,918.23/539.62
  6. Step 6: Final answer
    x = 370.48

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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.