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Finding the Fourth Proportional to 238.99, 356.54 and 227.65

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Solution

The fourth proportional to 238.99, 356.54 and 227.65 is: 339.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.99 : 356.54 = 227.65 : x
  2. Step 2: Convert to fraction form
    238.99/356.54 = 227.65/x
  3. Step 3: Cross multiply
    238.99x = 356.54 × 227.65
  4. Step 4: Simplify right side
    238.99x = 81,165.19
  5. Step 5: Solve for x
    x = 81,165.19/238.99
  6. Step 6: Final answer
    x = 339.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.