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Finding the Fourth Proportional to 258.84, 388.32 and 150.69

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Solution

The fourth proportional to 258.84, 388.32 and 150.69 is: 226.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.84 : 388.32 = 150.69 : x
  2. Step 2: Convert to fraction form
    258.84/388.32 = 150.69/x
  3. Step 3: Cross multiply
    258.84x = 388.32 × 150.69
  4. Step 4: Simplify right side
    258.84x = 58,515.94
  5. Step 5: Solve for x
    x = 58,515.94/258.84
  6. Step 6: Final answer
    x = 226.07

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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.