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Finding the Fourth Proportional to 609.09, 913.76 and 349.22

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Solution

The fourth proportional to 609.09, 913.76 and 349.22 is: 523.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.09 : 913.76 = 349.22 : x
  2. Step 2: Convert to fraction form
    609.09/913.76 = 349.22/x
  3. Step 3: Cross multiply
    609.09x = 913.76 × 349.22
  4. Step 4: Simplify right side
    609.09x = 319,096.95
  5. Step 5: Solve for x
    x = 319,096.95/609.09
  6. Step 6: Final answer
    x = 523.89

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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.