Finding the Fourth Proportional to 11.02, 15.18 and 8.71
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Solution
The fourth proportional to 11.02, 15.18 and 8.71 is: 11.99
Step by Step Solution
- Step 1: Write the proportion equation
11.02 : 15.18 = 8.71 : x - Step 2: Convert to fraction form
11.02/15.18 = 8.71/x - Step 3: Cross multiply
11.02x = 15.18 × 8.71 - Step 4: Simplify right side
11.02x = 132.15 - Step 5: Solve for x
x = 132.15/11.02 - Step 6: Final answer
x = 11.99
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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.