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Finding the Fourth Proportional to 609.20, 914.20 and 349.20

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Solution

The fourth proportional to 609.20, 914.20 and 349.20 is: 524.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.20 : 914.20 = 349.20 : x
  2. Step 2: Convert to fraction form
    609.20/914.20 = 349.20/x
  3. Step 3: Cross multiply
    609.20x = 914.20 × 349.20
  4. Step 4: Simplify right side
    609.20x = 319,238.64
  5. Step 5: Solve for x
    x = 319,238.64/609.20
  6. Step 6: Final answer
    x = 524.03

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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.