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Finding the Fourth Proportional to 329.85, 494.69 and 275.36

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Solution

The fourth proportional to 329.85, 494.69 and 275.36 is: 412.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.85 : 494.69 = 275.36 : x
  2. Step 2: Convert to fraction form
    329.85/494.69 = 275.36/x
  3. Step 3: Cross multiply
    329.85x = 494.69 × 275.36
  4. Step 4: Simplify right side
    329.85x = 136,213.99
  5. Step 5: Solve for x
    x = 136,213.99/329.85
  6. Step 6: Final answer
    x = 412.96

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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.