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Finding the Fourth Proportional to 339, 506.19 and 277.98

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Solution

The fourth proportional to 339, 506.19 and 277.98 is: 415.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    339 : 506.19 = 277.98 : x
  2. Step 2: Convert to fraction form
    339/506.19 = 277.98/x
  3. Step 3: Cross multiply
    339x = 506.19 × 277.98
  4. Step 4: Simplify right side
    339x = 140,710.70
  5. Step 5: Solve for x
    x = 140,710.70/339
  6. Step 6: Final answer
    x = 415.08

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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.