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Finding the Fourth Proportional to 376.15, 519.23 and 228.79

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Solution

The fourth proportional to 376.15, 519.23 and 228.79 is: 315.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.15 : 519.23 = 228.79 : x
  2. Step 2: Convert to fraction form
    376.15/519.23 = 228.79/x
  3. Step 3: Cross multiply
    376.15x = 519.23 × 228.79
  4. Step 4: Simplify right side
    376.15x = 118,794.63
  5. Step 5: Solve for x
    x = 118,794.63/376.15
  6. Step 6: Final answer
    x = 315.82

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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.