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Finding the Fourth Proportional to 558.35, 834.22 and 539.21

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Solution

The fourth proportional to 558.35, 834.22 and 539.21 is: 805.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.35 : 834.22 = 539.21 : x
  2. Step 2: Convert to fraction form
    558.35/834.22 = 539.21/x
  3. Step 3: Cross multiply
    558.35x = 834.22 × 539.21
  4. Step 4: Simplify right side
    558.35x = 449,819.77
  5. Step 5: Solve for x
    x = 449,819.77/558.35
  6. Step 6: Final answer
    x = 805.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.