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Finding the Fourth Proportional to 376.83, 520.05 and 219.50

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Solution

The fourth proportional to 376.83, 520.05 and 219.50 is: 302.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.83 : 520.05 = 219.50 : x
  2. Step 2: Convert to fraction form
    376.83/520.05 = 219.50/x
  3. Step 3: Cross multiply
    376.83x = 520.05 × 219.50
  4. Step 4: Simplify right side
    376.83x = 114,147.28
  5. Step 5: Solve for x
    x = 114,147.28/376.83
  6. Step 6: Final answer
    x = 302.92

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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.