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Finding the Fourth Proportional to 422.61, 583.28 and 273.42

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Solution

The fourth proportional to 422.61, 583.28 and 273.42 is: 377.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.61 : 583.28 = 273.42 : x
  2. Step 2: Convert to fraction form
    422.61/583.28 = 273.42/x
  3. Step 3: Cross multiply
    422.61x = 583.28 × 273.42
  4. Step 4: Simplify right side
    422.61x = 159,480.42
  5. Step 5: Solve for x
    x = 159,480.42/422.61
  6. Step 6: Final answer
    x = 377.37

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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.