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Finding the Fourth Proportional to 195.94, 293.67 and 99.70

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Solution

The fourth proportional to 195.94, 293.67 and 99.70 is: 149.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.94 : 293.67 = 99.70 : x
  2. Step 2: Convert to fraction form
    195.94/293.67 = 99.70/x
  3. Step 3: Cross multiply
    195.94x = 293.67 × 99.70
  4. Step 4: Simplify right side
    195.94x = 29,278.90
  5. Step 5: Solve for x
    x = 29,278.90/195.94
  6. Step 6: Final answer
    x = 149.43

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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.