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Finding the Fourth Proportional to 611.79, 844.06 and 349.62

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Solution

The fourth proportional to 611.79, 844.06 and 349.62 is: 482.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.79 : 844.06 = 349.62 : x
  2. Step 2: Convert to fraction form
    611.79/844.06 = 349.62/x
  3. Step 3: Cross multiply
    611.79x = 844.06 × 349.62
  4. Step 4: Simplify right side
    611.79x = 295,100.26
  5. Step 5: Solve for x
    x = 295,100.26/611.79
  6. Step 6: Final answer
    x = 482.36

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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.