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Finding the Fourth Proportional to 253.98, 348.21 and 249.36

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Solution

The fourth proportional to 253.98, 348.21 and 249.36 is: 341.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.98 : 348.21 = 249.36 : x
  2. Step 2: Convert to fraction form
    253.98/348.21 = 249.36/x
  3. Step 3: Cross multiply
    253.98x = 348.21 × 249.36
  4. Step 4: Simplify right side
    253.98x = 86,829.65
  5. Step 5: Solve for x
    x = 86,829.65/253.98
  6. Step 6: Final answer
    x = 341.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.