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Finding the Fourth Proportional to 255.84, 353.22 and 190.23

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Solution

The fourth proportional to 255.84, 353.22 and 190.23 is: 262.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.84 : 353.22 = 190.23 : x
  2. Step 2: Convert to fraction form
    255.84/353.22 = 190.23/x
  3. Step 3: Cross multiply
    255.84x = 353.22 × 190.23
  4. Step 4: Simplify right side
    255.84x = 67,193.04
  5. Step 5: Solve for x
    x = 67,193.04/255.84
  6. Step 6: Final answer
    x = 262.64

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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.