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Finding the Fourth Proportional to 367.30, 551.71 and 355

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Solution

The fourth proportional to 367.30, 551.71 and 355 is: 533.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.30 : 551.71 = 355 : x
  2. Step 2: Convert to fraction form
    367.30/551.71 = 355/x
  3. Step 3: Cross multiply
    367.30x = 551.71 × 355
  4. Step 4: Simplify right side
    367.30x = 195,857.05
  5. Step 5: Solve for x
    x = 195,857.05/367.30
  6. Step 6: Final answer
    x = 533.23

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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.