Finding the Fourth Proportional to 113.99, 170.97 and 68.62
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Solution
The fourth proportional to 113.99, 170.97 and 68.62 is: 102.92
Step by Step Solution
- Step 1: Write the proportion equation
113.99 : 170.97 = 68.62 : x - Step 2: Convert to fraction form
113.99/170.97 = 68.62/x - Step 3: Cross multiply
113.99x = 170.97 × 68.62 - Step 4: Simplify right side
113.99x = 11,731.96 - Step 5: Solve for x
x = 11,731.96/113.99 - Step 6: Final answer
x = 102.92
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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.