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Finding the Fourth Proportional to 223.40, 333.67 and 191

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Solution

The fourth proportional to 223.40, 333.67 and 191 is: 285.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.40 : 333.67 = 191 : x
  2. Step 2: Convert to fraction form
    223.40/333.67 = 191/x
  3. Step 3: Cross multiply
    223.40x = 333.67 × 191
  4. Step 4: Simplify right side
    223.40x = 63,730.97
  5. Step 5: Solve for x
    x = 63,730.97/223.40
  6. Step 6: Final answer
    x = 285.28

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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.