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Finding the Fourth Proportional to 546.51, 819.89 and 199.85

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Solution

The fourth proportional to 546.51, 819.89 and 199.85 is: 299.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.51 : 819.89 = 199.85 : x
  2. Step 2: Convert to fraction form
    546.51/819.89 = 199.85/x
  3. Step 3: Cross multiply
    546.51x = 819.89 × 199.85
  4. Step 4: Simplify right side
    546.51x = 163,851.42
  5. Step 5: Solve for x
    x = 163,851.42/546.51
  6. Step 6: Final answer
    x = 299.81

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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.