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Finding the Fourth Proportional to 376.76, 522.11 and 372.12

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Solution

The fourth proportional to 376.76, 522.11 and 372.12 is: 515.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.76 : 522.11 = 372.12 : x
  2. Step 2: Convert to fraction form
    376.76/522.11 = 372.12/x
  3. Step 3: Cross multiply
    376.76x = 522.11 × 372.12
  4. Step 4: Simplify right side
    376.76x = 194,287.57
  5. Step 5: Solve for x
    x = 194,287.57/376.76
  6. Step 6: Final answer
    x = 515.68

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.