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Finding the Fourth Proportional to 252.86, 379.33 and 137.23

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Solution

The fourth proportional to 252.86, 379.33 and 137.23 is: 205.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.86 : 379.33 = 137.23 : x
  2. Step 2: Convert to fraction form
    252.86/379.33 = 137.23/x
  3. Step 3: Cross multiply
    252.86x = 379.33 × 137.23
  4. Step 4: Simplify right side
    252.86x = 52,054.16
  5. Step 5: Solve for x
    x = 52,054.16/252.86
  6. Step 6: Final answer
    x = 205.87

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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.