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Finding the Fourth Proportional to 352.80, 486.32 and 228.44

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Solution

The fourth proportional to 352.80, 486.32 and 228.44 is: 314.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.80 : 486.32 = 228.44 : x
  2. Step 2: Convert to fraction form
    352.80/486.32 = 228.44/x
  3. Step 3: Cross multiply
    352.80x = 486.32 × 228.44
  4. Step 4: Simplify right side
    352.80x = 111,094.94
  5. Step 5: Solve for x
    x = 111,094.94/352.80
  6. Step 6: Final answer
    x = 314.89

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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.