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Finding the Fourth Proportional to 219.94, 327.58 and 208.37

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Solution

The fourth proportional to 219.94, 327.58 and 208.37 is: 310.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.94 : 327.58 = 208.37 : x
  2. Step 2: Convert to fraction form
    219.94/327.58 = 208.37/x
  3. Step 3: Cross multiply
    219.94x = 327.58 × 208.37
  4. Step 4: Simplify right side
    219.94x = 68,259.31
  5. Step 5: Solve for x
    x = 68,259.31/219.94
  6. Step 6: Final answer
    x = 310.36

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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.