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Finding the Fourth Proportional to 352.20, 529.10 and 338.60

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Solution

The fourth proportional to 352.20, 529.10 and 338.60 is: 508.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.20 : 529.10 = 338.60 : x
  2. Step 2: Convert to fraction form
    352.20/529.10 = 338.60/x
  3. Step 3: Cross multiply
    352.20x = 529.10 × 338.60
  4. Step 4: Simplify right side
    352.20x = 179,153.26
  5. Step 5: Solve for x
    x = 179,153.26/352.20
  6. Step 6: Final answer
    x = 508.67

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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.