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Finding the Fourth Proportional to 197.19, 295.78 and 88.90

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Solution

The fourth proportional to 197.19, 295.78 and 88.90 is: 133.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.19 : 295.78 = 88.90 : x
  2. Step 2: Convert to fraction form
    197.19/295.78 = 88.90/x
  3. Step 3: Cross multiply
    197.19x = 295.78 × 88.90
  4. Step 4: Simplify right side
    197.19x = 26,294.99
  5. Step 5: Solve for x
    x = 26,294.99/197.19
  6. Step 6: Final answer
    x = 133.35

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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.