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Finding the Fourth Proportional to 195.58, 293.17 and 79.87

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Solution

The fourth proportional to 195.58, 293.17 and 79.87 is: 119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.58 : 293.17 = 79.87 : x
  2. Step 2: Convert to fraction form
    195.58/293.17 = 79.87/x
  3. Step 3: Cross multiply
    195.58x = 293.17 × 79.87
  4. Step 4: Simplify right side
    195.58x = 23,415.49
  5. Step 5: Solve for x
    x = 23,415.49/195.58
  6. Step 6: Final answer
    x = 119.72

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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.