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Finding the Fourth Proportional to 546.34, 819.51 and 221.70

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Solution

The fourth proportional to 546.34, 819.51 and 221.70 is: 332.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.34 : 819.51 = 221.70 : x
  2. Step 2: Convert to fraction form
    546.34/819.51 = 221.70/x
  3. Step 3: Cross multiply
    546.34x = 819.51 × 221.70
  4. Step 4: Simplify right side
    546.34x = 181,685.37
  5. Step 5: Solve for x
    x = 181,685.37/546.34
  6. Step 6: Final answer
    x = 332.55

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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.