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Finding the Fourth Proportional to 484.72, 669.06 and 329.56

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Solution

The fourth proportional to 484.72, 669.06 and 329.56 is: 454.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.72 : 669.06 = 329.56 : x
  2. Step 2: Convert to fraction form
    484.72/669.06 = 329.56/x
  3. Step 3: Cross multiply
    484.72x = 669.06 × 329.56
  4. Step 4: Simplify right side
    484.72x = 220,495.41
  5. Step 5: Solve for x
    x = 220,495.41/484.72
  6. Step 6: Final answer
    x = 454.89

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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.