Finding the Fourth Proportional to 92.12, 138.17 and 27.99
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Solution
The fourth proportional to 92.12, 138.17 and 27.99 is: 41.99
Step by Step Solution
- Step 1: Write the proportion equation
92.12 : 138.17 = 27.99 : x - Step 2: Convert to fraction form
92.12/138.17 = 27.99/x - Step 3: Cross multiply
92.12x = 138.17 × 27.99 - Step 4: Simplify right side
92.12x = 3,867.45 - Step 5: Solve for x
x = 3,867.45/92.12 - Step 6: Final answer
x = 41.99
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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.