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Finding the Fourth Proportional to 484.11, 721.17 and 454.23

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Solution

The fourth proportional to 484.11, 721.17 and 454.23 is: 676.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.11 : 721.17 = 454.23 : x
  2. Step 2: Convert to fraction form
    484.11/721.17 = 454.23/x
  3. Step 3: Cross multiply
    484.11x = 721.17 × 454.23
  4. Step 4: Simplify right side
    484.11x = 327,577.05
  5. Step 5: Solve for x
    x = 327,577.05/484.11
  6. Step 6: Final answer
    x = 676.66

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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.