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Finding the Fourth Proportional to 205.36, 285.30 and 203.48

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Solution

The fourth proportional to 205.36, 285.30 and 203.48 is: 282.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.36 : 285.30 = 203.48 : x
  2. Step 2: Convert to fraction form
    205.36/285.30 = 203.48/x
  3. Step 3: Cross multiply
    205.36x = 285.30 × 203.48
  4. Step 4: Simplify right side
    205.36x = 58,052.84
  5. Step 5: Solve for x
    x = 58,052.84/205.36
  6. Step 6: Final answer
    x = 282.69

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.