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Finding the Fourth Proportional to 223.54, 332.48 and 221.11

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Solution

The fourth proportional to 223.54, 332.48 and 221.11 is: 328.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.54 : 332.48 = 221.11 : x
  2. Step 2: Convert to fraction form
    223.54/332.48 = 221.11/x
  3. Step 3: Cross multiply
    223.54x = 332.48 × 221.11
  4. Step 4: Simplify right side
    223.54x = 73,515.62
  5. Step 5: Solve for x
    x = 73,515.62/223.54
  6. Step 6: Final answer
    x = 328.87

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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.