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Finding the Fourth Proportional to 205.57, 283.63 and 127.99

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Solution

The fourth proportional to 205.57, 283.63 and 127.99 is: 176.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.57 : 283.63 = 127.99 : x
  2. Step 2: Convert to fraction form
    205.57/283.63 = 127.99/x
  3. Step 3: Cross multiply
    205.57x = 283.63 × 127.99
  4. Step 4: Simplify right side
    205.57x = 36,301.80
  5. Step 5: Solve for x
    x = 36,301.80/205.57
  6. Step 6: Final answer
    x = 176.59

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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.