Finding the Fourth Proportional to 8.16, 11.25 and 6
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Solution
The fourth proportional to 8.16, 11.25 and 6 is: 8.27
Step by Step Solution
- Step 1: Write the proportion equation
8.16 : 11.25 = 6 : x - Step 2: Convert to fraction form
8.16/11.25 = 6/x - Step 3: Cross multiply
8.16x = 11.25 × 6 - Step 4: Simplify right side
8.16x = 67.50 - Step 5: Solve for x
x = 67.50/8.16 - Step 6: Final answer
x = 8.27
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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.