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Finding the Fourth Proportional to 352.05, 528.05 and 121.03

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Solution

The fourth proportional to 352.05, 528.05 and 121.03 is: 181.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.05 : 528.05 = 121.03 : x
  2. Step 2: Convert to fraction form
    352.05/528.05 = 121.03/x
  3. Step 3: Cross multiply
    352.05x = 528.05 × 121.03
  4. Step 4: Simplify right side
    352.05x = 63,908.87
  5. Step 5: Solve for x
    x = 63,908.87/352.05
  6. Step 6: Final answer
    x = 181.53

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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.