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Finding the Fourth Proportional to 484.53, 667.95 and 395.85

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Solution

The fourth proportional to 484.53, 667.95 and 395.85 is: 545.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.53 : 667.95 = 395.85 : x
  2. Step 2: Convert to fraction form
    484.53/667.95 = 395.85/x
  3. Step 3: Cross multiply
    484.53x = 667.95 × 395.85
  4. Step 4: Simplify right side
    484.53x = 264,408.01
  5. Step 5: Solve for x
    x = 264,408.01/484.53
  6. Step 6: Final answer
    x = 545.70

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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.