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Finding the Fourth Proportional to 543.41, 750.64 and 396.85

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Solution

The fourth proportional to 543.41, 750.64 and 396.85 is: 548.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.41 : 750.64 = 396.85 : x
  2. Step 2: Convert to fraction form
    543.41/750.64 = 396.85/x
  3. Step 3: Cross multiply
    543.41x = 750.64 × 396.85
  4. Step 4: Simplify right side
    543.41x = 297,891.88
  5. Step 5: Solve for x
    x = 297,891.88/543.41
  6. Step 6: Final answer
    x = 548.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.