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Finding the Fourth Proportional to 353.18, 528.32 and 222.86

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Solution

The fourth proportional to 353.18, 528.32 and 222.86 is: 333.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.18 : 528.32 = 222.86 : x
  2. Step 2: Convert to fraction form
    353.18/528.32 = 222.86/x
  3. Step 3: Cross multiply
    353.18x = 528.32 × 222.86
  4. Step 4: Simplify right side
    353.18x = 117,741.40
  5. Step 5: Solve for x
    x = 117,741.40/353.18
  6. Step 6: Final answer
    x = 333.38

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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.