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Finding the Fourth Proportional to 367.93, 551.91 and 111.43

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Solution

The fourth proportional to 367.93, 551.91 and 111.43 is: 167.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.93 : 551.91 = 111.43 : x
  2. Step 2: Convert to fraction form
    367.93/551.91 = 111.43/x
  3. Step 3: Cross multiply
    367.93x = 551.91 × 111.43
  4. Step 4: Simplify right side
    367.93x = 61,499.33
  5. Step 5: Solve for x
    x = 61,499.33/367.93
  6. Step 6: Final answer
    x = 167.15

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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.