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Finding the Fourth Proportional to 197.37, 271.42 and 160.45

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Solution

The fourth proportional to 197.37, 271.42 and 160.45 is: 220.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.37 : 271.42 = 160.45 : x
  2. Step 2: Convert to fraction form
    197.37/271.42 = 160.45/x
  3. Step 3: Cross multiply
    197.37x = 271.42 × 160.45
  4. Step 4: Simplify right side
    197.37x = 43,548.26
  5. Step 5: Solve for x
    x = 43,548.26/197.37
  6. Step 6: Final answer
    x = 220.64

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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.