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Finding the Fourth Proportional to 222.17, 333.40 and 100.43

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Solution

The fourth proportional to 222.17, 333.40 and 100.43 is: 150.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.17 : 333.40 = 100.43 : x
  2. Step 2: Convert to fraction form
    222.17/333.40 = 100.43/x
  3. Step 3: Cross multiply
    222.17x = 333.40 × 100.43
  4. Step 4: Simplify right side
    222.17x = 33,483.36
  5. Step 5: Solve for x
    x = 33,483.36/222.17
  6. Step 6: Final answer
    x = 150.71

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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.