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Finding the Fourth Proportional to 422.49, 583.05 and 254.53

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Solution

The fourth proportional to 422.49, 583.05 and 254.53 is: 351.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.49 : 583.05 = 254.53 : x
  2. Step 2: Convert to fraction form
    422.49/583.05 = 254.53/x
  3. Step 3: Cross multiply
    422.49x = 583.05 × 254.53
  4. Step 4: Simplify right side
    422.49x = 148,403.72
  5. Step 5: Solve for x
    x = 148,403.72/422.49
  6. Step 6: Final answer
    x = 351.26

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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.