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Finding the Fourth Proportional to 584.21, 806.28 and 351.38

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Solution

The fourth proportional to 584.21, 806.28 and 351.38 is: 484.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.21 : 806.28 = 351.38 : x
  2. Step 2: Convert to fraction form
    584.21/806.28 = 351.38/x
  3. Step 3: Cross multiply
    584.21x = 806.28 × 351.38
  4. Step 4: Simplify right side
    584.21x = 283,310.67
  5. Step 5: Solve for x
    x = 283,310.67/584.21
  6. Step 6: Final answer
    x = 484.95

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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.