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Finding the Fourth Proportional to 204.88, 282.94 and 155.88

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Solution

The fourth proportional to 204.88, 282.94 and 155.88 is: 215.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.88 : 282.94 = 155.88 : x
  2. Step 2: Convert to fraction form
    204.88/282.94 = 155.88/x
  3. Step 3: Cross multiply
    204.88x = 282.94 × 155.88
  4. Step 4: Simplify right side
    204.88x = 44,104.69
  5. Step 5: Solve for x
    x = 44,104.69/204.88
  6. Step 6: Final answer
    x = 215.27

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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.