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Finding the Fourth Proportional to 223.55, 332.97 and 213.56

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Solution

The fourth proportional to 223.55, 332.97 and 213.56 is: 318.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.55 : 332.97 = 213.56 : x
  2. Step 2: Convert to fraction form
    223.55/332.97 = 213.56/x
  3. Step 3: Cross multiply
    223.55x = 332.97 × 213.56
  4. Step 4: Simplify right side
    223.55x = 71,109.06
  5. Step 5: Solve for x
    x = 71,109.06/223.55
  6. Step 6: Final answer
    x = 318.08

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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.