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Finding the Fourth Proportional to 327.01, 490.35 and 121.51

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Solution

The fourth proportional to 327.01, 490.35 and 121.51 is: 182.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.01 : 490.35 = 121.51 : x
  2. Step 2: Convert to fraction form
    327.01/490.35 = 121.51/x
  3. Step 3: Cross multiply
    327.01x = 490.35 × 121.51
  4. Step 4: Simplify right side
    327.01x = 59,582.43
  5. Step 5: Solve for x
    x = 59,582.43/327.01
  6. Step 6: Final answer
    x = 182.20

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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.