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Finding the Fourth Proportional to 339.97, 510.09 and 243.09

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Solution

The fourth proportional to 339.97, 510.09 and 243.09 is: 364.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.97 : 510.09 = 243.09 : x
  2. Step 2: Convert to fraction form
    339.97/510.09 = 243.09/x
  3. Step 3: Cross multiply
    339.97x = 510.09 × 243.09
  4. Step 4: Simplify right side
    339.97x = 123,997.78
  5. Step 5: Solve for x
    x = 123,997.78/339.97
  6. Step 6: Final answer
    x = 364.73

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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.