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Finding the Fourth Proportional to 235.98, 351.42 and 222

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Solution

The fourth proportional to 235.98, 351.42 and 222 is: 330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.98 : 351.42 = 222 : x
  2. Step 2: Convert to fraction form
    235.98/351.42 = 222/x
  3. Step 3: Cross multiply
    235.98x = 351.42 × 222
  4. Step 4: Simplify right side
    235.98x = 78,014.41
  5. Step 5: Solve for x
    x = 78,014.41/235.98
  6. Step 6: Final answer
    x = 330.60

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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.