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Finding the Fourth Proportional to 195.98, 292.28 and 186.87

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Solution

The fourth proportional to 195.98, 292.28 and 186.87 is: 278.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.98 : 292.28 = 186.87 : x
  2. Step 2: Convert to fraction form
    195.98/292.28 = 186.87/x
  3. Step 3: Cross multiply
    195.98x = 292.28 × 186.87
  4. Step 4: Simplify right side
    195.98x = 54,618.36
  5. Step 5: Solve for x
    x = 54,618.36/195.98
  6. Step 6: Final answer
    x = 278.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.