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Finding the Fourth Proportional to 223.72, 333.79 and 190.85

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Solution

The fourth proportional to 223.72, 333.79 and 190.85 is: 284.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.72 : 333.79 = 190.85 : x
  2. Step 2: Convert to fraction form
    223.72/333.79 = 190.85/x
  3. Step 3: Cross multiply
    223.72x = 333.79 × 190.85
  4. Step 4: Simplify right side
    223.72x = 63,702.21
  5. Step 5: Solve for x
    x = 63,702.21/223.72
  6. Step 6: Final answer
    x = 284.74

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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.