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Finding the Fourth Proportional to 367.95, 551.31 and 259.56

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Solution

The fourth proportional to 367.95, 551.31 and 259.56 is: 388.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.95 : 551.31 = 259.56 : x
  2. Step 2: Convert to fraction form
    367.95/551.31 = 259.56/x
  3. Step 3: Cross multiply
    367.95x = 551.31 × 259.56
  4. Step 4: Simplify right side
    367.95x = 143,098.02
  5. Step 5: Solve for x
    x = 143,098.02/367.95
  6. Step 6: Final answer
    x = 388.91

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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.