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Finding the Fourth Proportional to 339.04, 507.60 and 217.44

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Solution

The fourth proportional to 339.04, 507.60 and 217.44 is: 325.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.04 : 507.60 = 217.44 : x
  2. Step 2: Convert to fraction form
    339.04/507.60 = 217.44/x
  3. Step 3: Cross multiply
    339.04x = 507.60 × 217.44
  4. Step 4: Simplify right side
    339.04x = 110,372.54
  5. Step 5: Solve for x
    x = 110,372.54/339.04
  6. Step 6: Final answer
    x = 325.54

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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.