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Finding the Fourth Proportional to 339.11, 508.25 and 270.35

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Solution

The fourth proportional to 339.11, 508.25 and 270.35 is: 405.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.11 : 508.25 = 270.35 : x
  2. Step 2: Convert to fraction form
    339.11/508.25 = 270.35/x
  3. Step 3: Cross multiply
    339.11x = 508.25 × 270.35
  4. Step 4: Simplify right side
    339.11x = 137,404.04
  5. Step 5: Solve for x
    x = 137,404.04/339.11
  6. Step 6: Final answer
    x = 405.19

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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.