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Finding the Fourth Proportional to 368.22, 551.72 and 223.68

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Solution

The fourth proportional to 368.22, 551.72 and 223.68 is: 335.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.22 : 551.72 = 223.68 : x
  2. Step 2: Convert to fraction form
    368.22/551.72 = 223.68/x
  3. Step 3: Cross multiply
    368.22x = 551.72 × 223.68
  4. Step 4: Simplify right side
    368.22x = 123,408.73
  5. Step 5: Solve for x
    x = 123,408.73/368.22
  6. Step 6: Final answer
    x = 335.15

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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.