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Finding the Fourth Proportional to 352.41, 528.62 and 121.30

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Solution

The fourth proportional to 352.41, 528.62 and 121.30 is: 181.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.41 : 528.62 = 121.30 : x
  2. Step 2: Convert to fraction form
    352.41/528.62 = 121.30/x
  3. Step 3: Cross multiply
    352.41x = 528.62 × 121.30
  4. Step 4: Simplify right side
    352.41x = 64,121.61
  5. Step 5: Solve for x
    x = 64,121.61/352.41
  6. Step 6: Final answer
    x = 181.95

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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.