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Finding the Fourth Proportional to 195.90, 274.80 and 195.90

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Solution

The fourth proportional to 195.90, 274.80 and 195.90 is: 274.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.90 : 274.80 = 195.90 : x
  2. Step 2: Convert to fraction form
    195.90/274.80 = 195.90/x
  3. Step 3: Cross multiply
    195.90x = 274.80 × 195.90
  4. Step 4: Simplify right side
    195.90x = 53,833.32
  5. Step 5: Solve for x
    x = 53,833.32/195.90
  6. Step 6: Final answer
    x = 274.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.