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Finding the Fourth Proportional to 547.07, 820.46 and 272.96

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Solution

The fourth proportional to 547.07, 820.46 and 272.96 is: 409.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.07 : 820.46 = 272.96 : x
  2. Step 2: Convert to fraction form
    547.07/820.46 = 272.96/x
  3. Step 3: Cross multiply
    547.07x = 820.46 × 272.96
  4. Step 4: Simplify right side
    547.07x = 223,947.29
  5. Step 5: Solve for x
    x = 223,947.29/547.07
  6. Step 6: Final answer
    x = 409.36

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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.