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Finding the Fourth Proportional to 201.90, 279.93 and 191.52

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Solution

The fourth proportional to 201.90, 279.93 and 191.52 is: 265.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.90 : 279.93 = 191.52 : x
  2. Step 2: Convert to fraction form
    201.90/279.93 = 191.52/x
  3. Step 3: Cross multiply
    201.90x = 279.93 × 191.52
  4. Step 4: Simplify right side
    201.90x = 53,612.19
  5. Step 5: Solve for x
    x = 53,612.19/201.90
  6. Step 6: Final answer
    x = 265.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.