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Finding the Fourth Proportional to 245.89, 338.88 and 227.28

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Solution

The fourth proportional to 245.89, 338.88 and 227.28 is: 313.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.89 : 338.88 = 227.28 : x
  2. Step 2: Convert to fraction form
    245.89/338.88 = 227.28/x
  3. Step 3: Cross multiply
    245.89x = 338.88 × 227.28
  4. Step 4: Simplify right side
    245.89x = 77,020.65
  5. Step 5: Solve for x
    x = 77,020.65/245.89
  6. Step 6: Final answer
    x = 313.23

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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.