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Finding the Fourth Proportional to 367.65, 506.90 and 243.09

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Solution

The fourth proportional to 367.65, 506.90 and 243.09 is: 335.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.65 : 506.90 = 243.09 : x
  2. Step 2: Convert to fraction form
    367.65/506.90 = 243.09/x
  3. Step 3: Cross multiply
    367.65x = 506.90 × 243.09
  4. Step 4: Simplify right side
    367.65x = 123,222.93
  5. Step 5: Solve for x
    x = 123,222.93/367.65
  6. Step 6: Final answer
    x = 335.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.