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Finding the Fourth Proportional to 547.93, 821.69 and 223.12

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Solution

The fourth proportional to 547.93, 821.69 and 223.12 is: 334.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.93 : 821.69 = 223.12 : x
  2. Step 2: Convert to fraction form
    547.93/821.69 = 223.12/x
  3. Step 3: Cross multiply
    547.93x = 821.69 × 223.12
  4. Step 4: Simplify right side
    547.93x = 183,330.25
  5. Step 5: Solve for x
    x = 183,330.25/547.93
  6. Step 6: Final answer
    x = 334.59

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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.