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Finding the Fourth Proportional to 483.66, 721.68 and 454.27

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Solution

The fourth proportional to 483.66, 721.68 and 454.27 is: 677.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.66 : 721.68 = 454.27 : x
  2. Step 2: Convert to fraction form
    483.66/721.68 = 454.27/x
  3. Step 3: Cross multiply
    483.66x = 721.68 × 454.27
  4. Step 4: Simplify right side
    483.66x = 327,835.77
  5. Step 5: Solve for x
    x = 327,835.77/483.66
  6. Step 6: Final answer
    x = 677.82

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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.