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Finding the Fourth Proportional to 197.61, 296.48 and 89.48

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Solution

The fourth proportional to 197.61, 296.48 and 89.48 is: 134.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.61 : 296.48 = 89.48 : x
  2. Step 2: Convert to fraction form
    197.61/296.48 = 89.48/x
  3. Step 3: Cross multiply
    197.61x = 296.48 × 89.48
  4. Step 4: Simplify right side
    197.61x = 26,529.03
  5. Step 5: Solve for x
    x = 26,529.03/197.61
  6. Step 6: Final answer
    x = 134.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.