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Finding the Fourth Proportional to 409, 611.88 and 362.84

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Solution

The fourth proportional to 409, 611.88 and 362.84 is: 542.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    409 : 611.88 = 362.84 : x
  2. Step 2: Convert to fraction form
    409/611.88 = 362.84/x
  3. Step 3: Cross multiply
    409x = 611.88 × 362.84
  4. Step 4: Simplify right side
    409x = 222,014.54
  5. Step 5: Solve for x
    x = 222,014.54/409
  6. Step 6: Final answer
    x = 542.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.