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Finding the Fourth Proportional to 543.47, 814.67 and 219.07

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Solution

The fourth proportional to 543.47, 814.67 and 219.07 is: 328.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.47 : 814.67 = 219.07 : x
  2. Step 2: Convert to fraction form
    543.47/814.67 = 219.07/x
  3. Step 3: Cross multiply
    543.47x = 814.67 × 219.07
  4. Step 4: Simplify right side
    543.47x = 178,466.62
  5. Step 5: Solve for x
    x = 178,466.62/543.47
  6. Step 6: Final answer
    x = 328.38

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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.