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Finding the Fourth Proportional to 223.08, 332.19 and 220.65

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Solution

The fourth proportional to 223.08, 332.19 and 220.65 is: 328.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.08 : 332.19 = 220.65 : x
  2. Step 2: Convert to fraction form
    223.08/332.19 = 220.65/x
  3. Step 3: Cross multiply
    223.08x = 332.19 × 220.65
  4. Step 4: Simplify right side
    223.08x = 73,297.72
  5. Step 5: Solve for x
    x = 73,297.72/223.08
  6. Step 6: Final answer
    x = 328.57

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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.