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Finding the Fourth Proportional to 222.14, 333.42 and 140

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Solution

The fourth proportional to 222.14, 333.42 and 140 is: 210.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.14 : 333.42 = 140 : x
  2. Step 2: Convert to fraction form
    222.14/333.42 = 140/x
  3. Step 3: Cross multiply
    222.14x = 333.42 × 140
  4. Step 4: Simplify right side
    222.14x = 46,678.80
  5. Step 5: Solve for x
    x = 46,678.80/222.14
  6. Step 6: Final answer
    x = 210.13

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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.