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Finding the Fourth Proportional to 351.22, 484.80 and 339.68

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Solution

The fourth proportional to 351.22, 484.80 and 339.68 is: 468.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.22 : 484.80 = 339.68 : x
  2. Step 2: Convert to fraction form
    351.22/484.80 = 339.68/x
  3. Step 3: Cross multiply
    351.22x = 484.80 × 339.68
  4. Step 4: Simplify right side
    351.22x = 164,676.86
  5. Step 5: Solve for x
    x = 164,676.86/351.22
  6. Step 6: Final answer
    x = 468.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.