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Finding the Fourth Proportional to 351.11, 524.18 and 268.40

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Solution

The fourth proportional to 351.11, 524.18 and 268.40 is: 400.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.11 : 524.18 = 268.40 : x
  2. Step 2: Convert to fraction form
    351.11/524.18 = 268.40/x
  3. Step 3: Cross multiply
    351.11x = 524.18 × 268.40
  4. Step 4: Simplify right side
    351.11x = 140,691.22
  5. Step 5: Solve for x
    x = 140,691.22/351.11
  6. Step 6: Final answer
    x = 400.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.