Finding the Third Proportional to 1.38 and 2
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Solution
The third proportional to 1.38 and 2 is: 2.91
Step by Step Solution
- Step 1: Write the proportion equation
1.38 : 2 = 2 : x - Step 2: Convert to fraction form
1.38/2 = 2/x - Step 3: Cross multiply
1.38x = 2 × 2 - Step 4: Simplify right side
1.38x = 4 - Step 5: Solve for x
x = 4/1.38 - Step 6: Final answer
x = 2.91
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These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.