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Finding the Fourth Proportional to 351.62, 528.30 and 228.30

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Solution

The fourth proportional to 351.62, 528.30 and 228.30 is: 343.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.62 : 528.30 = 228.30 : x
  2. Step 2: Convert to fraction form
    351.62/528.30 = 228.30/x
  3. Step 3: Cross multiply
    351.62x = 528.30 × 228.30
  4. Step 4: Simplify right side
    351.62x = 120,610.89
  5. Step 5: Solve for x
    x = 120,610.89/351.62
  6. Step 6: Final answer
    x = 343.01

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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.