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Finding the Fourth Proportional to 539, 743.91 and 306.26

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Solution

The fourth proportional to 539, 743.91 and 306.26 is: 422.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    539 : 743.91 = 306.26 : x
  2. Step 2: Convert to fraction form
    539/743.91 = 306.26/x
  3. Step 3: Cross multiply
    539x = 743.91 × 306.26
  4. Step 4: Simplify right side
    539x = 227,829.88
  5. Step 5: Solve for x
    x = 227,829.88/539
  6. Step 6: Final answer
    x = 422.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.