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Finding the Fourth Proportional to 280.54, 422.46 and 204.04

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Solution

The fourth proportional to 280.54, 422.46 and 204.04 is: 307.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.54 : 422.46 = 204.04 : x
  2. Step 2: Convert to fraction form
    280.54/422.46 = 204.04/x
  3. Step 3: Cross multiply
    280.54x = 422.46 × 204.04
  4. Step 4: Simplify right side
    280.54x = 86,198.74
  5. Step 5: Solve for x
    x = 86,198.74/280.54
  6. Step 6: Final answer
    x = 307.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.