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Finding the Fourth Proportional to 1.38, 2.08 and 0.94

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Solution

The fourth proportional to 1.38, 2.08 and 0.94 is: 1.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1.38 : 2.08 = 0.94 : x
  2. Step 2: Convert to fraction form
    1.38/2.08 = 0.94/x
  3. Step 3: Cross multiply
    1.38x = 2.08 × 0.94
  4. Step 4: Simplify right side
    1.38x = 1.95
  5. Step 5: Solve for x
    x = 1.95/1.38
  6. Step 6: Final answer
    x = 1.41

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.