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Finding the Fourth Proportional to 609.95, 913.28 and 349.73

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Solution

The fourth proportional to 609.95, 913.28 and 349.73 is: 523.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.95 : 913.28 = 349.73 : x
  2. Step 2: Convert to fraction form
    609.95/913.28 = 349.73/x
  3. Step 3: Cross multiply
    609.95x = 913.28 × 349.73
  4. Step 4: Simplify right side
    609.95x = 319,395.10
  5. Step 5: Solve for x
    x = 319,395.10/609.95
  6. Step 6: Final answer
    x = 523.65

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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.