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Finding the Fourth Proportional to 367.34, 549.63 and 221.18

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Solution

The fourth proportional to 367.34, 549.63 and 221.18 is: 330.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.34 : 549.63 = 221.18 : x
  2. Step 2: Convert to fraction form
    367.34/549.63 = 221.18/x
  3. Step 3: Cross multiply
    367.34x = 549.63 × 221.18
  4. Step 4: Simplify right side
    367.34x = 121,564.42
  5. Step 5: Solve for x
    x = 121,564.42/367.34
  6. Step 6: Final answer
    x = 330.94

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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.