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Finding the Fourth Proportional to 547.77, 821.39 and 200.86

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Solution

The fourth proportional to 547.77, 821.39 and 200.86 is: 301.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.77 : 821.39 = 200.86 : x
  2. Step 2: Convert to fraction form
    547.77/821.39 = 200.86/x
  3. Step 3: Cross multiply
    547.77x = 821.39 × 200.86
  4. Step 4: Simplify right side
    547.77x = 164,981.34
  5. Step 5: Solve for x
    x = 164,981.34/547.77
  6. Step 6: Final answer
    x = 301.19

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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.