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Finding the Fourth Proportional to 412.66, 568.61 and 281.44

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Solution

The fourth proportional to 412.66, 568.61 and 281.44 is: 387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.66 : 568.61 = 281.44 : x
  2. Step 2: Convert to fraction form
    412.66/568.61 = 281.44/x
  3. Step 3: Cross multiply
    412.66x = 568.61 × 281.44
  4. Step 4: Simplify right side
    412.66x = 160,029.60
  5. Step 5: Solve for x
    x = 160,029.60/412.66
  6. Step 6: Final answer
    x = 387.80

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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.