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Finding the Fourth Proportional to 221.87, 333.14 and 187.89

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Solution

The fourth proportional to 221.87, 333.14 and 187.89 is: 282.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.87 : 333.14 = 187.89 : x
  2. Step 2: Convert to fraction form
    221.87/333.14 = 187.89/x
  3. Step 3: Cross multiply
    221.87x = 333.14 × 187.89
  4. Step 4: Simplify right side
    221.87x = 62,592.74
  5. Step 5: Solve for x
    x = 62,592.74/221.87
  6. Step 6: Final answer
    x = 282.12

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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.