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Finding the Fourth Proportional to 253.20, 351.80 and 250.68

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Solution

The fourth proportional to 253.20, 351.80 and 250.68 is: 348.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.20 : 351.80 = 250.68 : x
  2. Step 2: Convert to fraction form
    253.20/351.80 = 250.68/x
  3. Step 3: Cross multiply
    253.20x = 351.80 × 250.68
  4. Step 4: Simplify right side
    253.20x = 88,189.22
  5. Step 5: Solve for x
    x = 88,189.22/253.20
  6. Step 6: Final answer
    x = 348.30

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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.