Finding the Fourth Proportional to 8.19, 12.26 and 6.99
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Solution
The fourth proportional to 8.19, 12.26 and 6.99 is: 10.45
Step by Step Solution
- Step 1: Write the proportion equation
8.19 : 12.26 = 6.99 : x - Step 2: Convert to fraction form
8.19/12.26 = 6.99/x - Step 3: Cross multiply
8.19x = 12.26 × 6.99 - Step 4: Simplify right side
8.19x = 85.66 - Step 5: Solve for x
x = 85.66/8.19 - Step 6: Final answer
x = 10.45
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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.