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Finding the Fourth Proportional to 547.26, 820.29 and 384.90

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Solution

The fourth proportional to 547.26, 820.29 and 384.90 is: 576.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.26 : 820.29 = 384.90 : x
  2. Step 2: Convert to fraction form
    547.26/820.29 = 384.90/x
  3. Step 3: Cross multiply
    547.26x = 820.29 × 384.90
  4. Step 4: Simplify right side
    547.26x = 315,729.62
  5. Step 5: Solve for x
    x = 315,729.62/547.26
  6. Step 6: Final answer
    x = 576.93

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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.