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Finding the Fourth Proportional to 253.76, 351.56 and 248.08

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Solution

The fourth proportional to 253.76, 351.56 and 248.08 is: 343.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.76 : 351.56 = 248.08 : x
  2. Step 2: Convert to fraction form
    253.76/351.56 = 248.08/x
  3. Step 3: Cross multiply
    253.76x = 351.56 × 248.08
  4. Step 4: Simplify right side
    253.76x = 87,215.00
  5. Step 5: Solve for x
    x = 87,215.00/253.76
  6. Step 6: Final answer
    x = 343.69

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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.