Finding the Fourth Proportional to 2.08, 2.86 and 2
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Solution
The fourth proportional to 2.08, 2.86 and 2 is: 2.75
Step by Step Solution
- Step 1: Write the proportion equation
2.08 : 2.86 = 2 : x - Step 2: Convert to fraction form
2.08/2.86 = 2/x - Step 3: Cross multiply
2.08x = 2.86 × 2 - Step 4: Simplify right side
2.08x = 5.72 - Step 5: Solve for x
x = 5.72/2.08 - Step 6: Final answer
x = 2.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.