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Finding the Fourth Proportional to 543.50, 814.44 and 369.80

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Solution

The fourth proportional to 543.50, 814.44 and 369.80 is: 554.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.50 : 814.44 = 369.80 : x
  2. Step 2: Convert to fraction form
    543.50/814.44 = 369.80/x
  3. Step 3: Cross multiply
    543.50x = 814.44 × 369.80
  4. Step 4: Simplify right side
    543.50x = 301,179.91
  5. Step 5: Solve for x
    x = 301,179.91/543.50
  6. Step 6: Final answer
    x = 554.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.