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Finding the Fourth Proportional to 155.09, 213.81 and 150.32

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Solution

The fourth proportional to 155.09, 213.81 and 150.32 is: 207.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.09 : 213.81 = 150.32 : x
  2. Step 2: Convert to fraction form
    155.09/213.81 = 150.32/x
  3. Step 3: Cross multiply
    155.09x = 213.81 × 150.32
  4. Step 4: Simplify right side
    155.09x = 32,138.85
  5. Step 5: Solve for x
    x = 32,138.85/155.09
  6. Step 6: Final answer
    x = 207.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.