Finding the Fourth Proportional to 67.86, 101.97 and 57.96
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Solution
The fourth proportional to 67.86, 101.97 and 57.96 is: 87.09
Step by Step Solution
- Step 1: Write the proportion equation
67.86 : 101.97 = 57.96 : x - Step 2: Convert to fraction form
67.86/101.97 = 57.96/x - Step 3: Cross multiply
67.86x = 101.97 × 57.96 - Step 4: Simplify right side
67.86x = 5,910.18 - Step 5: Solve for x
x = 5,910.18/67.86 - Step 6: Final answer
x = 87.09
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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.