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Finding the Fourth Proportional to 411.35, 568.28 and 349.81

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Solution

The fourth proportional to 411.35, 568.28 and 349.81 is: 483.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.35 : 568.28 = 349.81 : x
  2. Step 2: Convert to fraction form
    411.35/568.28 = 349.81/x
  3. Step 3: Cross multiply
    411.35x = 568.28 × 349.81
  4. Step 4: Simplify right side
    411.35x = 198,789.48
  5. Step 5: Solve for x
    x = 198,789.48/411.35
  6. Step 6: Final answer
    x = 483.27

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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.