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Finding the Fourth Proportional to 380.76, 571.47 and 336.96

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Solution

The fourth proportional to 380.76, 571.47 and 336.96 is: 505.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.76 : 571.47 = 336.96 : x
  2. Step 2: Convert to fraction form
    380.76/571.47 = 336.96/x
  3. Step 3: Cross multiply
    380.76x = 571.47 × 336.96
  4. Step 4: Simplify right side
    380.76x = 192,563.55
  5. Step 5: Solve for x
    x = 192,563.55/380.76
  6. Step 6: Final answer
    x = 505.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.