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Finding the Fourth Proportional to 195.12, 294 and 189.36

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Solution

The fourth proportional to 195.12, 294 and 189.36 is: 285.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.12 : 294 = 189.36 : x
  2. Step 2: Convert to fraction form
    195.12/294 = 189.36/x
  3. Step 3: Cross multiply
    195.12x = 294 × 189.36
  4. Step 4: Simplify right side
    195.12x = 55,671.84
  5. Step 5: Solve for x
    x = 55,671.84/195.12
  6. Step 6: Final answer
    x = 285.32

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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.