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Finding the Fourth Proportional to 364.06, 545.48 and 255.31

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Solution

The fourth proportional to 364.06, 545.48 and 255.31 is: 382.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.06 : 545.48 = 255.31 : x
  2. Step 2: Convert to fraction form
    364.06/545.48 = 255.31/x
  3. Step 3: Cross multiply
    364.06x = 545.48 × 255.31
  4. Step 4: Simplify right side
    364.06x = 139,266.59
  5. Step 5: Solve for x
    x = 139,266.59/364.06
  6. Step 6: Final answer
    x = 382.54

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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.