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Finding the Fourth Proportional to 205.91, 283.74 and 193.15

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Solution

The fourth proportional to 205.91, 283.74 and 193.15 is: 266.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.91 : 283.74 = 193.15 : x
  2. Step 2: Convert to fraction form
    205.91/283.74 = 193.15/x
  3. Step 3: Cross multiply
    205.91x = 283.74 × 193.15
  4. Step 4: Simplify right side
    205.91x = 54,804.01
  5. Step 5: Solve for x
    x = 54,804.01/205.91
  6. Step 6: Final answer
    x = 266.16

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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.