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Finding the Fourth Proportional to 423.20, 584.28 and 335.60

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Solution

The fourth proportional to 423.20, 584.28 and 335.60 is: 463.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.20 : 584.28 = 335.60 : x
  2. Step 2: Convert to fraction form
    423.20/584.28 = 335.60/x
  3. Step 3: Cross multiply
    423.20x = 584.28 × 335.60
  4. Step 4: Simplify right side
    423.20x = 196,084.37
  5. Step 5: Solve for x
    x = 196,084.37/423.20
  6. Step 6: Final answer
    x = 463.34

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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.