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Finding the Fourth Proportional to 609.35, 839.96 and 576.55

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Solution

The fourth proportional to 609.35, 839.96 and 576.55 is: 794.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.35 : 839.96 = 576.55 : x
  2. Step 2: Convert to fraction form
    609.35/839.96 = 576.55/x
  3. Step 3: Cross multiply
    609.35x = 839.96 × 576.55
  4. Step 4: Simplify right side
    609.35x = 484,276.12
  5. Step 5: Solve for x
    x = 484,276.12/609.35
  6. Step 6: Final answer
    x = 794.74

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.