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Finding the Fourth Proportional to 280.28, 422.10 and 244.64

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Solution

The fourth proportional to 280.28, 422.10 and 244.64 is: 368.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.28 : 422.10 = 244.64 : x
  2. Step 2: Convert to fraction form
    280.28/422.10 = 244.64/x
  3. Step 3: Cross multiply
    280.28x = 422.10 × 244.64
  4. Step 4: Simplify right side
    280.28x = 103,262.54
  5. Step 5: Solve for x
    x = 103,262.54/280.28
  6. Step 6: Final answer
    x = 368.43

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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.