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Finding the Fourth Proportional to 300.96, 415.19 and 212.57

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Solution

The fourth proportional to 300.96, 415.19 and 212.57 is: 293.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.96 : 415.19 = 212.57 : x
  2. Step 2: Convert to fraction form
    300.96/415.19 = 212.57/x
  3. Step 3: Cross multiply
    300.96x = 415.19 × 212.57
  4. Step 4: Simplify right side
    300.96x = 88,255.90
  5. Step 5: Solve for x
    x = 88,255.90/300.96
  6. Step 6: Final answer
    x = 293.25

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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.