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Finding the Fourth Proportional to 398.28, 597.37 and 268.35

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Solution

The fourth proportional to 398.28, 597.37 and 268.35 is: 402.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.28 : 597.37 = 268.35 : x
  2. Step 2: Convert to fraction form
    398.28/597.37 = 268.35/x
  3. Step 3: Cross multiply
    398.28x = 597.37 × 268.35
  4. Step 4: Simplify right side
    398.28x = 160,304.24
  5. Step 5: Solve for x
    x = 160,304.24/398.28
  6. Step 6: Final answer
    x = 402.49

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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.