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Finding the Fourth Proportional to 239.98, 357.86 and 222.34

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Solution

The fourth proportional to 239.98, 357.86 and 222.34 is: 331.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.98 : 357.86 = 222.34 : x
  2. Step 2: Convert to fraction form
    239.98/357.86 = 222.34/x
  3. Step 3: Cross multiply
    239.98x = 357.86 × 222.34
  4. Step 4: Simplify right side
    239.98x = 79,566.59
  5. Step 5: Solve for x
    x = 79,566.59/239.98
  6. Step 6: Final answer
    x = 331.56

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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.