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Finding the Fourth Proportional to 484.30, 667.65 and 326.65

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Solution

The fourth proportional to 484.30, 667.65 and 326.65 is: 450.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.30 : 667.65 = 326.65 : x
  2. Step 2: Convert to fraction form
    484.30/667.65 = 326.65/x
  3. Step 3: Cross multiply
    484.30x = 667.65 × 326.65
  4. Step 4: Simplify right side
    484.30x = 218,087.87
  5. Step 5: Solve for x
    x = 218,087.87/484.30
  6. Step 6: Final answer
    x = 450.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.