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Finding the Fourth Proportional to 219.64, 329.46 and 187.37

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Solution

The fourth proportional to 219.64, 329.46 and 187.37 is: 281.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.64 : 329.46 = 187.37 : x
  2. Step 2: Convert to fraction form
    219.64/329.46 = 187.37/x
  3. Step 3: Cross multiply
    219.64x = 329.46 × 187.37
  4. Step 4: Simplify right side
    219.64x = 61,730.92
  5. Step 5: Solve for x
    x = 61,730.92/219.64
  6. Step 6: Final answer
    x = 281.06

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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.