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Finding the Fourth Proportional to 327.01, 489.94 and 205

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Solution

The fourth proportional to 327.01, 489.94 and 205 is: 307.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.01 : 489.94 = 205 : x
  2. Step 2: Convert to fraction form
    327.01/489.94 = 205/x
  3. Step 3: Cross multiply
    327.01x = 489.94 × 205
  4. Step 4: Simplify right side
    327.01x = 100,437.70
  5. Step 5: Solve for x
    x = 100,437.70/327.01
  6. Step 6: Final answer
    x = 307.14

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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.