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Finding the Fourth Proportional to 329.58, 494.76 and 231.67

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Solution

The fourth proportional to 329.58, 494.76 and 231.67 is: 347.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.58 : 494.76 = 231.67 : x
  2. Step 2: Convert to fraction form
    329.58/494.76 = 231.67/x
  3. Step 3: Cross multiply
    329.58x = 494.76 × 231.67
  4. Step 4: Simplify right side
    329.58x = 114,621.93
  5. Step 5: Solve for x
    x = 114,621.93/329.58
  6. Step 6: Final answer
    x = 347.78

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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.