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Finding the Fourth Proportional to 195.27, 292.90 and 85.58

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Solution

The fourth proportional to 195.27, 292.90 and 85.58 is: 128.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.27 : 292.90 = 85.58 : x
  2. Step 2: Convert to fraction form
    195.27/292.90 = 85.58/x
  3. Step 3: Cross multiply
    195.27x = 292.90 × 85.58
  4. Step 4: Simplify right side
    195.27x = 25,066.38
  5. Step 5: Solve for x
    x = 25,066.38/195.27
  6. Step 6: Final answer
    x = 128.37

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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.