Finding the Fourth Proportional to 11.46, 15.79 and 10.09
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Solution
The fourth proportional to 11.46, 15.79 and 10.09 is: 13.90
Step by Step Solution
- Step 1: Write the proportion equation
11.46 : 15.79 = 10.09 : x - Step 2: Convert to fraction form
11.46/15.79 = 10.09/x - Step 3: Cross multiply
11.46x = 15.79 × 10.09 - Step 4: Simplify right side
11.46x = 159.32 - Step 5: Solve for x
x = 159.32/11.46 - Step 6: Final answer
x = 13.90
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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.