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Finding the Fourth Proportional to 484.59, 669.20 and 329.07

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Solution

The fourth proportional to 484.59, 669.20 and 329.07 is: 454.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.59 : 669.20 = 329.07 : x
  2. Step 2: Convert to fraction form
    484.59/669.20 = 329.07/x
  3. Step 3: Cross multiply
    484.59x = 669.20 × 329.07
  4. Step 4: Simplify right side
    484.59x = 220,212.00
  5. Step 5: Solve for x
    x = 220,212.00/484.59
  6. Step 6: Final answer
    x = 454.43

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Double scale
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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.