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Finding the Fourth Proportional to 436.57, 655.55 and 254.09

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Solution

The fourth proportional to 436.57, 655.55 and 254.09 is: 381.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.57 : 655.55 = 254.09 : x
  2. Step 2: Convert to fraction form
    436.57/655.55 = 254.09/x
  3. Step 3: Cross multiply
    436.57x = 655.55 × 254.09
  4. Step 4: Simplify right side
    436.57x = 166,567.43
  5. Step 5: Solve for x
    x = 166,567.43/436.57
  6. Step 6: Final answer
    x = 381.54

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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.