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Finding the Fourth Proportional to 225.11, 336.85 and 219.71

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Solution

The fourth proportional to 225.11, 336.85 and 219.71 is: 328.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.11 : 336.85 = 219.71 : x
  2. Step 2: Convert to fraction form
    225.11/336.85 = 219.71/x
  3. Step 3: Cross multiply
    225.11x = 336.85 × 219.71
  4. Step 4: Simplify right side
    225.11x = 74,009.31
  5. Step 5: Solve for x
    x = 74,009.31/225.11
  6. Step 6: Final answer
    x = 328.77

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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.