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Finding the Fourth Proportional to 376.83, 520.12 and 238.75

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Solution

The fourth proportional to 376.83, 520.12 and 238.75 is: 329.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.83 : 520.12 = 238.75 : x
  2. Step 2: Convert to fraction form
    376.83/520.12 = 238.75/x
  3. Step 3: Cross multiply
    376.83x = 520.12 × 238.75
  4. Step 4: Simplify right side
    376.83x = 124,177.46
  5. Step 5: Solve for x
    x = 124,177.46/376.83
  6. Step 6: Final answer
    x = 329.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.