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Finding the Fourth Proportional to 253.55, 351.37 and 248.69

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Solution

The fourth proportional to 253.55, 351.37 and 248.69 is: 344.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.55 : 351.37 = 248.69 : x
  2. Step 2: Convert to fraction form
    253.55/351.37 = 248.69/x
  3. Step 3: Cross multiply
    253.55x = 351.37 × 248.69
  4. Step 4: Simplify right side
    253.55x = 87,382.21
  5. Step 5: Solve for x
    x = 87,382.21/253.55
  6. Step 6: Final answer
    x = 344.64

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.