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Finding the Fourth Proportional to 253.39, 380.16 and 229.30

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Solution

The fourth proportional to 253.39, 380.16 and 229.30 is: 344.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.39 : 380.16 = 229.30 : x
  2. Step 2: Convert to fraction form
    253.39/380.16 = 229.30/x
  3. Step 3: Cross multiply
    253.39x = 380.16 × 229.30
  4. Step 4: Simplify right side
    253.39x = 87,170.69
  5. Step 5: Solve for x
    x = 87,170.69/253.39
  6. Step 6: Final answer
    x = 344.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.