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Finding the Fourth Proportional to 329.47, 494.02 and 207.47

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Solution

The fourth proportional to 329.47, 494.02 and 207.47 is: 311.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.47 : 494.02 = 207.47 : x
  2. Step 2: Convert to fraction form
    329.47/494.02 = 207.47/x
  3. Step 3: Cross multiply
    329.47x = 494.02 × 207.47
  4. Step 4: Simplify right side
    329.47x = 102,493.19
  5. Step 5: Solve for x
    x = 102,493.19/329.47
  6. Step 6: Final answer
    x = 311.09

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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.