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Finding the Fourth Proportional to 422.34, 583.59 and 329.33

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Solution

The fourth proportional to 422.34, 583.59 and 329.33 is: 455.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.34 : 583.59 = 329.33 : x
  2. Step 2: Convert to fraction form
    422.34/583.59 = 329.33/x
  3. Step 3: Cross multiply
    422.34x = 583.59 × 329.33
  4. Step 4: Simplify right side
    422.34x = 192,193.69
  5. Step 5: Solve for x
    x = 192,193.69/422.34
  6. Step 6: Final answer
    x = 455.07

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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.