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Finding the Fourth Proportional to 223.70, 333.66 and 208.58

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Solution

The fourth proportional to 223.70, 333.66 and 208.58 is: 311.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.70 : 333.66 = 208.58 : x
  2. Step 2: Convert to fraction form
    223.70/333.66 = 208.58/x
  3. Step 3: Cross multiply
    223.70x = 333.66 × 208.58
  4. Step 4: Simplify right side
    223.70x = 69,594.80
  5. Step 5: Solve for x
    x = 69,594.80/223.70
  6. Step 6: Final answer
    x = 311.11

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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.