Finding the Fourth Proportional to 87.63, 131.32 and 46.99
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Solution
The fourth proportional to 87.63, 131.32 and 46.99 is: 70.42
Step by Step Solution
- Step 1: Write the proportion equation
87.63 : 131.32 = 46.99 : x - Step 2: Convert to fraction form
87.63/131.32 = 46.99/x - Step 3: Cross multiply
87.63x = 131.32 × 46.99 - Step 4: Simplify right side
87.63x = 6,170.73 - Step 5: Solve for x
x = 6,170.73/87.63 - Step 6: Final answer
x = 70.42
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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.