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Finding the Fourth Proportional to 484.08, 668.34 and 385.44

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Solution

The fourth proportional to 484.08, 668.34 and 385.44 is: 532.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.08 : 668.34 = 385.44 : x
  2. Step 2: Convert to fraction form
    484.08/668.34 = 385.44/x
  3. Step 3: Cross multiply
    484.08x = 668.34 × 385.44
  4. Step 4: Simplify right side
    484.08x = 257,604.97
  5. Step 5: Solve for x
    x = 257,604.97/484.08
  6. Step 6: Final answer
    x = 532.15

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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.