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Finding the Fourth Proportional to 223.42, 335 and 120.68

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Solution

The fourth proportional to 223.42, 335 and 120.68 is: 180.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.42 : 335 = 120.68 : x
  2. Step 2: Convert to fraction form
    223.42/335 = 120.68/x
  3. Step 3: Cross multiply
    223.42x = 335 × 120.68
  4. Step 4: Simplify right side
    223.42x = 40,427.80
  5. Step 5: Solve for x
    x = 40,427.80/223.42
  6. Step 6: Final answer
    x = 180.95

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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.