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Finding the Fourth Proportional to 329.81, 494.06 and 251.81

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Solution

The fourth proportional to 329.81, 494.06 and 251.81 is: 377.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.81 : 494.06 = 251.81 : x
  2. Step 2: Convert to fraction form
    329.81/494.06 = 251.81/x
  3. Step 3: Cross multiply
    329.81x = 494.06 × 251.81
  4. Step 4: Simplify right side
    329.81x = 124,405.52
  5. Step 5: Solve for x
    x = 124,405.52/329.81
  6. Step 6: Final answer
    x = 377.21

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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.