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Finding the Fourth Proportional to 368.48, 551.36 and 222.30

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Solution

The fourth proportional to 368.48, 551.36 and 222.30 is: 332.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.48 : 551.36 = 222.30 : x
  2. Step 2: Convert to fraction form
    368.48/551.36 = 222.30/x
  3. Step 3: Cross multiply
    368.48x = 551.36 × 222.30
  4. Step 4: Simplify right side
    368.48x = 122,567.88
  5. Step 5: Solve for x
    x = 122,567.88/368.48
  6. Step 6: Final answer
    x = 332.63

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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.