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Finding the Fourth Proportional to 363.53, 545.38 and 255.53

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Solution

The fourth proportional to 363.53, 545.38 and 255.53 is: 383.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.53 : 545.38 = 255.53 : x
  2. Step 2: Convert to fraction form
    363.53/545.38 = 255.53/x
  3. Step 3: Cross multiply
    363.53x = 545.38 × 255.53
  4. Step 4: Simplify right side
    363.53x = 139,357.59
  5. Step 5: Solve for x
    x = 139,357.59/363.53
  6. Step 6: Final answer
    x = 383.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.