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Finding the Fourth Proportional to 197.71, 297.72 and 146.71

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Solution

The fourth proportional to 197.71, 297.72 and 146.71 is: 220.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.71 : 297.72 = 146.71 : x
  2. Step 2: Convert to fraction form
    197.71/297.72 = 146.71/x
  3. Step 3: Cross multiply
    197.71x = 297.72 × 146.71
  4. Step 4: Simplify right side
    197.71x = 43,678.50
  5. Step 5: Solve for x
    x = 43,678.50/197.71
  6. Step 6: Final answer
    x = 220.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.