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Finding the Fourth Proportional to 197.11, 271.98 and 176.32

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Solution

The fourth proportional to 197.11, 271.98 and 176.32 is: 243.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.11 : 271.98 = 176.32 : x
  2. Step 2: Convert to fraction form
    197.11/271.98 = 176.32/x
  3. Step 3: Cross multiply
    197.11x = 271.98 × 176.32
  4. Step 4: Simplify right side
    197.11x = 47,955.51
  5. Step 5: Solve for x
    x = 47,955.51/197.11
  6. Step 6: Final answer
    x = 243.29

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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.