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Finding the Fourth Proportional to 376.11, 518.95 and 228.75

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Solution

The fourth proportional to 376.11, 518.95 and 228.75 is: 315.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.11 : 518.95 = 228.75 : x
  2. Step 2: Convert to fraction form
    376.11/518.95 = 228.75/x
  3. Step 3: Cross multiply
    376.11x = 518.95 × 228.75
  4. Step 4: Simplify right side
    376.11x = 118,706.65
  5. Step 5: Solve for x
    x = 118,706.65/376.11
  6. Step 6: Final answer
    x = 315.61

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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.