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Finding the Fourth Proportional to 193.10, 288.43 and 127.55

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Solution

The fourth proportional to 193.10, 288.43 and 127.55 is: 190.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.10 : 288.43 = 127.55 : x
  2. Step 2: Convert to fraction form
    193.10/288.43 = 127.55/x
  3. Step 3: Cross multiply
    193.10x = 288.43 × 127.55
  4. Step 4: Simplify right side
    193.10x = 36,790.37
  5. Step 5: Solve for x
    x = 36,790.37/193.10
  6. Step 6: Final answer
    x = 190.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.