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Finding the Fourth Proportional to 470.92, 706.18 and 254.44

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Solution

The fourth proportional to 470.92, 706.18 and 254.44 is: 381.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.92 : 706.18 = 254.44 : x
  2. Step 2: Convert to fraction form
    470.92/706.18 = 254.44/x
  3. Step 3: Cross multiply
    470.92x = 706.18 × 254.44
  4. Step 4: Simplify right side
    470.92x = 179,680.44
  5. Step 5: Solve for x
    x = 179,680.44/470.92
  6. Step 6: Final answer
    x = 381.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.