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Finding the Fourth Proportional to 372.86, 557.25 and 343.67

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Solution

The fourth proportional to 372.86, 557.25 and 343.67 is: 513.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.86 : 557.25 = 343.67 : x
  2. Step 2: Convert to fraction form
    372.86/557.25 = 343.67/x
  3. Step 3: Cross multiply
    372.86x = 557.25 × 343.67
  4. Step 4: Simplify right side
    372.86x = 191,508.39
  5. Step 5: Solve for x
    x = 191,508.39/372.86
  6. Step 6: Final answer
    x = 513.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.