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Finding the Fourth Proportional to 445.55, 667.68 and 329.07

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Solution

The fourth proportional to 445.55, 667.68 and 329.07 is: 493.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.55 : 667.68 = 329.07 : x
  2. Step 2: Convert to fraction form
    445.55/667.68 = 329.07/x
  3. Step 3: Cross multiply
    445.55x = 667.68 × 329.07
  4. Step 4: Simplify right side
    445.55x = 219,713.46
  5. Step 5: Solve for x
    x = 219,713.46/445.55
  6. Step 6: Final answer
    x = 493.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.