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Finding the Fourth Proportional to 395.43, 543.41 and 377.37

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Solution

The fourth proportional to 395.43, 543.41 and 377.37 is: 518.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.43 : 543.41 = 377.37 : x
  2. Step 2: Convert to fraction form
    395.43/543.41 = 377.37/x
  3. Step 3: Cross multiply
    395.43x = 543.41 × 377.37
  4. Step 4: Simplify right side
    395.43x = 205,064.74
  5. Step 5: Solve for x
    x = 205,064.74/395.43
  6. Step 6: Final answer
    x = 518.59

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.