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Finding the Fourth Proportional to 353.04, 487.22 and 203.69

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Solution

The fourth proportional to 353.04, 487.22 and 203.69 is: 281.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.04 : 487.22 = 203.69 : x
  2. Step 2: Convert to fraction form
    353.04/487.22 = 203.69/x
  3. Step 3: Cross multiply
    353.04x = 487.22 × 203.69
  4. Step 4: Simplify right side
    353.04x = 99,241.84
  5. Step 5: Solve for x
    x = 99,241.84/353.04
  6. Step 6: Final answer
    x = 281.11

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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.