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Finding the Fourth Proportional to 376.17, 519.18 and 228.81

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Solution

The fourth proportional to 376.17, 519.18 and 228.81 is: 315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.17 : 519.18 = 228.81 : x
  2. Step 2: Convert to fraction form
    376.17/519.18 = 228.81/x
  3. Step 3: Cross multiply
    376.17x = 519.18 × 228.81
  4. Step 4: Simplify right side
    376.17x = 118,793.58
  5. Step 5: Solve for x
    x = 118,793.58/376.17
  6. Step 6: Final answer
    x = 315.80

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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.