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Finding the Fourth Proportional to 389.93, 584.80 and 227.75

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Solution

The fourth proportional to 389.93, 584.80 and 227.75 is: 341.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.93 : 584.80 = 227.75 : x
  2. Step 2: Convert to fraction form
    389.93/584.80 = 227.75/x
  3. Step 3: Cross multiply
    389.93x = 584.80 × 227.75
  4. Step 4: Simplify right side
    389.93x = 133,188.20
  5. Step 5: Solve for x
    x = 133,188.20/389.93
  6. Step 6: Final answer
    x = 341.57

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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.