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Finding the Fourth Proportional to 204.83, 282.74 and 155.83

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Solution

The fourth proportional to 204.83, 282.74 and 155.83 is: 215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.83 : 282.74 = 155.83 : x
  2. Step 2: Convert to fraction form
    204.83/282.74 = 155.83/x
  3. Step 3: Cross multiply
    204.83x = 282.74 × 155.83
  4. Step 4: Simplify right side
    204.83x = 44,059.37
  5. Step 5: Solve for x
    x = 44,059.37/204.83
  6. Step 6: Final answer
    x = 215.10

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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.