Finding the Fourth Proportional to 86.44, 129.58 and 63.73
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Solution
The fourth proportional to 86.44, 129.58 and 63.73 is: 95.54
Step by Step Solution
- Step 1: Write the proportion equation
86.44 : 129.58 = 63.73 : x - Step 2: Convert to fraction form
86.44/129.58 = 63.73/x - Step 3: Cross multiply
86.44x = 129.58 × 63.73 - Step 4: Simplify right side
86.44x = 8,258.13 - Step 5: Solve for x
x = 8,258.13/86.44 - Step 6: Final answer
x = 95.54
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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.