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Finding the Fourth Proportional to 609.08, 839.98 and 484.54

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Solution

The fourth proportional to 609.08, 839.98 and 484.54 is: 668.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.08 : 839.98 = 484.54 : x
  2. Step 2: Convert to fraction form
    609.08/839.98 = 484.54/x
  3. Step 3: Cross multiply
    609.08x = 839.98 × 484.54
  4. Step 4: Simplify right side
    609.08x = 407,003.91
  5. Step 5: Solve for x
    x = 407,003.91/609.08
  6. Step 6: Final answer
    x = 668.23

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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.