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Finding the Fourth Proportional to 411.22, 568.94 and 348.85

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Solution

The fourth proportional to 411.22, 568.94 and 348.85 is: 482.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.22 : 568.94 = 348.85 : x
  2. Step 2: Convert to fraction form
    411.22/568.94 = 348.85/x
  3. Step 3: Cross multiply
    411.22x = 568.94 × 348.85
  4. Step 4: Simplify right side
    411.22x = 198,474.72
  5. Step 5: Solve for x
    x = 198,474.72/411.22
  6. Step 6: Final answer
    x = 482.65

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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.