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Finding the Fourth Proportional to 376.43, 561.79 and 366.71

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Solution

The fourth proportional to 376.43, 561.79 and 366.71 is: 547.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.43 : 561.79 = 366.71 : x
  2. Step 2: Convert to fraction form
    376.43/561.79 = 366.71/x
  3. Step 3: Cross multiply
    376.43x = 561.79 × 366.71
  4. Step 4: Simplify right side
    376.43x = 206,014.01
  5. Step 5: Solve for x
    x = 206,014.01/376.43
  6. Step 6: Final answer
    x = 547.28

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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.