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Finding the Fourth Proportional to 327.51, 491.19 and 223.47

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Solution

The fourth proportional to 327.51, 491.19 and 223.47 is: 335.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.51 : 491.19 = 223.47 : x
  2. Step 2: Convert to fraction form
    327.51/491.19 = 223.47/x
  3. Step 3: Cross multiply
    327.51x = 491.19 × 223.47
  4. Step 4: Simplify right side
    327.51x = 109,766.23
  5. Step 5: Solve for x
    x = 109,766.23/327.51
  6. Step 6: Final answer
    x = 335.15

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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.