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Finding the Fourth Proportional to 398.12, 597.18 and 227.24

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Solution

The fourth proportional to 398.12, 597.18 and 227.24 is: 340.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.12 : 597.18 = 227.24 : x
  2. Step 2: Convert to fraction form
    398.12/597.18 = 227.24/x
  3. Step 3: Cross multiply
    398.12x = 597.18 × 227.24
  4. Step 4: Simplify right side
    398.12x = 135,703.18
  5. Step 5: Solve for x
    x = 135,703.18/398.12
  6. Step 6: Final answer
    x = 340.86

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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.