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Finding the Fourth Proportional to 584.60, 806.86 and 351.88

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Solution

The fourth proportional to 584.60, 806.86 and 351.88 is: 485.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.60 : 806.86 = 351.88 : x
  2. Step 2: Convert to fraction form
    584.60/806.86 = 351.88/x
  3. Step 3: Cross multiply
    584.60x = 806.86 × 351.88
  4. Step 4: Simplify right side
    584.60x = 283,917.90
  5. Step 5: Solve for x
    x = 283,917.90/584.60
  6. Step 6: Final answer
    x = 485.66

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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.