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Finding the Fourth Proportional to 296.87, 445.37 and 121.16

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Solution

The fourth proportional to 296.87, 445.37 and 121.16 is: 181.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.87 : 445.37 = 121.16 : x
  2. Step 2: Convert to fraction form
    296.87/445.37 = 121.16/x
  3. Step 3: Cross multiply
    296.87x = 445.37 × 121.16
  4. Step 4: Simplify right side
    296.87x = 53,961.54
  5. Step 5: Solve for x
    x = 53,961.54/296.87
  6. Step 6: Final answer
    x = 181.77

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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.