Finding the Fourth Proportional to 38.18, 57.12 and 27.98
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Solution
The fourth proportional to 38.18, 57.12 and 27.98 is: 41.86
Step by Step Solution
- Step 1: Write the proportion equation
38.18 : 57.12 = 27.98 : x - Step 2: Convert to fraction form
38.18/57.12 = 27.98/x - Step 3: Cross multiply
38.18x = 57.12 × 27.98 - Step 4: Simplify right side
38.18x = 1,598.22 - Step 5: Solve for x
x = 1,598.22/38.18 - Step 6: Final answer
x = 41.86
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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.