Finding the Fourth Proportional to 91.96, 137.99 and 88.63
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Solution
The fourth proportional to 91.96, 137.99 and 88.63 is: 132.99
Step by Step Solution
- Step 1: Write the proportion equation
91.96 : 137.99 = 88.63 : x - Step 2: Convert to fraction form
91.96/137.99 = 88.63/x - Step 3: Cross multiply
91.96x = 137.99 × 88.63 - Step 4: Simplify right side
91.96x = 12,230.05 - Step 5: Solve for x
x = 12,230.05/91.96 - Step 6: Final answer
x = 132.99
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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.