Finding the Fourth Proportional to 114.44, 157.87 and 81.63
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Solution
The fourth proportional to 114.44, 157.87 and 81.63 is: 112.62
Step by Step Solution
- Step 1: Write the proportion equation
114.44 : 157.87 = 81.63 : x - Step 2: Convert to fraction form
114.44/157.87 = 81.63/x - Step 3: Cross multiply
114.44x = 157.87 × 81.63 - Step 4: Simplify right side
114.44x = 12,887.70 - Step 5: Solve for x
x = 12,887.70/114.44 - Step 6: Final answer
x = 112.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.