Finding the Fourth Proportional to 198.19, 297.26 and 68.18
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Solution
The fourth proportional to 198.19, 297.26 and 68.18 is: 102.26
Step by Step Solution
- Step 1: Write the proportion equation
198.19 : 297.26 = 68.18 : x - Step 2: Convert to fraction form
198.19/297.26 = 68.18/x - Step 3: Cross multiply
198.19x = 297.26 × 68.18 - Step 4: Simplify right side
198.19x = 20,267.19 - Step 5: Solve for x
x = 20,267.19/198.19 - Step 6: Final answer
x = 102.26
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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.