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Finding the Fourth Proportional to 349.61, 521.19 and 333.21

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Solution

The fourth proportional to 349.61, 521.19 and 333.21 is: 496.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.61 : 521.19 = 333.21 : x
  2. Step 2: Convert to fraction form
    349.61/521.19 = 333.21/x
  3. Step 3: Cross multiply
    349.61x = 521.19 × 333.21
  4. Step 4: Simplify right side
    349.61x = 173,663.95
  5. Step 5: Solve for x
    x = 173,663.95/349.61
  6. Step 6: Final answer
    x = 496.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.