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Finding the Fourth Proportional to 267.28, 398.98 and 247.24

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Solution

The fourth proportional to 267.28, 398.98 and 247.24 is: 369.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.28 : 398.98 = 247.24 : x
  2. Step 2: Convert to fraction form
    267.28/398.98 = 247.24/x
  3. Step 3: Cross multiply
    267.28x = 398.98 × 247.24
  4. Step 4: Simplify right side
    267.28x = 98,641.82
  5. Step 5: Solve for x
    x = 98,641.82/267.28
  6. Step 6: Final answer
    x = 369.06

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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.