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Finding the Fourth Proportional to 364.67, 547.81 and 220.49

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Solution

The fourth proportional to 364.67, 547.81 and 220.49 is: 331.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.67 : 547.81 = 220.49 : x
  2. Step 2: Convert to fraction form
    364.67/547.81 = 220.49/x
  3. Step 3: Cross multiply
    364.67x = 547.81 × 220.49
  4. Step 4: Simplify right side
    364.67x = 120,786.63
  5. Step 5: Solve for x
    x = 120,786.63/364.67
  6. Step 6: Final answer
    x = 331.22

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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.