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Finding the Fourth Proportional to 245.70, 339.26 and 227.28

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Solution

The fourth proportional to 245.70, 339.26 and 227.28 is: 313.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.70 : 339.26 = 227.28 : x
  2. Step 2: Convert to fraction form
    245.70/339.26 = 227.28/x
  3. Step 3: Cross multiply
    245.70x = 339.26 × 227.28
  4. Step 4: Simplify right side
    245.70x = 77,107.01
  5. Step 5: Solve for x
    x = 77,107.01/245.70
  6. Step 6: Final answer
    x = 313.83

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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.