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Finding the Fourth Proportional to 329.25, 493.47 and 199.17

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Solution

The fourth proportional to 329.25, 493.47 and 199.17 is: 298.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.25 : 493.47 = 199.17 : x
  2. Step 2: Convert to fraction form
    329.25/493.47 = 199.17/x
  3. Step 3: Cross multiply
    329.25x = 493.47 × 199.17
  4. Step 4: Simplify right side
    329.25x = 98,284.42
  5. Step 5: Solve for x
    x = 98,284.42/329.25
  6. Step 6: Final answer
    x = 298.51

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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.