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Finding the Fourth Proportional to 195.75, 293.35 and 143.99

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Solution

The fourth proportional to 195.75, 293.35 and 143.99 is: 215.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.75 : 293.35 = 143.99 : x
  2. Step 2: Convert to fraction form
    195.75/293.35 = 143.99/x
  3. Step 3: Cross multiply
    195.75x = 293.35 × 143.99
  4. Step 4: Simplify right side
    195.75x = 42,239.47
  5. Step 5: Solve for x
    x = 42,239.47/195.75
  6. Step 6: Final answer
    x = 215.78

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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.