Finding the Fourth Proportional to 98.26, 135.66 and 79.92
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Solution
The fourth proportional to 98.26, 135.66 and 79.92 is: 110.34
Step by Step Solution
- Step 1: Write the proportion equation
98.26 : 135.66 = 79.92 : x - Step 2: Convert to fraction form
98.26/135.66 = 79.92/x - Step 3: Cross multiply
98.26x = 135.66 × 79.92 - Step 4: Simplify right side
98.26x = 10,841.95 - Step 5: Solve for x
x = 10,841.95/98.26 - Step 6: Final answer
x = 110.34
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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.