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Finding the Fourth Proportional to 364.60, 547.08 and 220.42

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Solution

The fourth proportional to 364.60, 547.08 and 220.42 is: 330.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.60 : 547.08 = 220.42 : x
  2. Step 2: Convert to fraction form
    364.60/547.08 = 220.42/x
  3. Step 3: Cross multiply
    364.60x = 547.08 × 220.42
  4. Step 4: Simplify right side
    364.60x = 120,587.37
  5. Step 5: Solve for x
    x = 120,587.37/364.60
  6. Step 6: Final answer
    x = 330.74

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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.