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Finding the Fourth Proportional to 352.20, 528.46 and 146.92

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Solution

The fourth proportional to 352.20, 528.46 and 146.92 is: 220.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.20 : 528.46 = 146.92 : x
  2. Step 2: Convert to fraction form
    352.20/528.46 = 146.92/x
  3. Step 3: Cross multiply
    352.20x = 528.46 × 146.92
  4. Step 4: Simplify right side
    352.20x = 77,641.34
  5. Step 5: Solve for x
    x = 77,641.34/352.20
  6. Step 6: Final answer
    x = 220.45

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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.