Finding the Fourth Proportional to 18.44, 25.35 and 15.70
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Solution
The fourth proportional to 18.44, 25.35 and 15.70 is: 21.58
Step by Step Solution
- Step 1: Write the proportion equation
18.44 : 25.35 = 15.70 : x - Step 2: Convert to fraction form
18.44/25.35 = 15.70/x - Step 3: Cross multiply
18.44x = 25.35 × 15.70 - Step 4: Simplify right side
18.44x = 397.99 - Step 5: Solve for x
x = 397.99/18.44 - Step 6: Final answer
x = 21.58
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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.