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Finding the Fourth Proportional to 350.28, 484.25 and 306.54

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Solution

The fourth proportional to 350.28, 484.25 and 306.54 is: 423.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.28 : 484.25 = 306.54 : x
  2. Step 2: Convert to fraction form
    350.28/484.25 = 306.54/x
  3. Step 3: Cross multiply
    350.28x = 484.25 × 306.54
  4. Step 4: Simplify right side
    350.28x = 148,440.46
  5. Step 5: Solve for x
    x = 148,440.46/350.28
  6. Step 6: Final answer
    x = 423.78

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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.