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Finding the Fourth Proportional to 339.08, 506.87 and 251.60

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Solution

The fourth proportional to 339.08, 506.87 and 251.60 is: 376.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.08 : 506.87 = 251.60 : x
  2. Step 2: Convert to fraction form
    339.08/506.87 = 251.60/x
  3. Step 3: Cross multiply
    339.08x = 506.87 × 251.60
  4. Step 4: Simplify right side
    339.08x = 127,524.70
  5. Step 5: Solve for x
    x = 127,524.70/339.08
  6. Step 6: Final answer
    x = 376.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.