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Finding the Fourth Proportional to 381.63, 571.63 and 360.33

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Solution

The fourth proportional to 381.63, 571.63 and 360.33 is: 539.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.63 : 571.63 = 360.33 : x
  2. Step 2: Convert to fraction form
    381.63/571.63 = 360.33/x
  3. Step 3: Cross multiply
    381.63x = 571.63 × 360.33
  4. Step 4: Simplify right side
    381.63x = 205,971.68
  5. Step 5: Solve for x
    x = 205,971.68/381.63
  6. Step 6: Final answer
    x = 539.72

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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.