Finding the Fourth Proportional to 7.99, 11.96 and 6.65
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Solution
The fourth proportional to 7.99, 11.96 and 6.65 is: 9.95
Step by Step Solution
- Step 1: Write the proportion equation
7.99 : 11.96 = 6.65 : x - Step 2: Convert to fraction form
7.99/11.96 = 6.65/x - Step 3: Cross multiply
7.99x = 11.96 × 6.65 - Step 4: Simplify right side
7.99x = 79.53 - Step 5: Solve for x
x = 79.53/7.99 - Step 6: Final answer
x = 9.95
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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.