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Finding the Fourth Proportional to 547.16, 820.63 and 181.88

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Solution

The fourth proportional to 547.16, 820.63 and 181.88 is: 272.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.16 : 820.63 = 181.88 : x
  2. Step 2: Convert to fraction form
    547.16/820.63 = 181.88/x
  3. Step 3: Cross multiply
    547.16x = 820.63 × 181.88
  4. Step 4: Simplify right side
    547.16x = 149,251.63
  5. Step 5: Solve for x
    x = 149,251.63/547.16
  6. Step 6: Final answer
    x = 272.78

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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.