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Finding the Fourth Proportional to 307.38, 424.35 and 224.34

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Solution

The fourth proportional to 307.38, 424.35 and 224.34 is: 309.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.38 : 424.35 = 224.34 : x
  2. Step 2: Convert to fraction form
    307.38/424.35 = 224.34/x
  3. Step 3: Cross multiply
    307.38x = 424.35 × 224.34
  4. Step 4: Simplify right side
    307.38x = 95,198.68
  5. Step 5: Solve for x
    x = 95,198.68/307.38
  6. Step 6: Final answer
    x = 309.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.