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Finding the Fourth Proportional to 412.20, 568.86 and 237.55

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Solution

The fourth proportional to 412.20, 568.86 and 237.55 is: 327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.20 : 568.86 = 237.55 : x
  2. Step 2: Convert to fraction form
    412.20/568.86 = 237.55/x
  3. Step 3: Cross multiply
    412.20x = 568.86 × 237.55
  4. Step 4: Simplify right side
    412.20x = 135,132.69
  5. Step 5: Solve for x
    x = 135,132.69/412.20
  6. Step 6: Final answer
    x = 327.83

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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.