Finding the Fourth Proportional to 10.81, 14.82 and 10.20
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Solution
The fourth proportional to 10.81, 14.82 and 10.20 is: 13.99
Step by Step Solution
- Step 1: Write the proportion equation
10.81 : 14.82 = 10.20 : x - Step 2: Convert to fraction form
10.81/14.82 = 10.20/x - Step 3: Cross multiply
10.81x = 14.82 × 10.20 - Step 4: Simplify right side
10.81x = 151.23 - Step 5: Solve for x
x = 151.23/10.81 - Step 6: Final answer
x = 13.99
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.