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Finding the Fourth Proportional to 223.21, 332.94 and 218.35

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Solution

The fourth proportional to 223.21, 332.94 and 218.35 is: 325.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.21 : 332.94 = 218.35 : x
  2. Step 2: Convert to fraction form
    223.21/332.94 = 218.35/x
  3. Step 3: Cross multiply
    223.21x = 332.94 × 218.35
  4. Step 4: Simplify right side
    223.21x = 72,697.45
  5. Step 5: Solve for x
    x = 72,697.45/223.21
  6. Step 6: Final answer
    x = 325.69

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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.