Finding the Fourth Proportional to 207.91, 311.87 and 63.63
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Solution
The fourth proportional to 207.91, 311.87 and 63.63 is: 95.45
Step by Step Solution
- Step 1: Write the proportion equation
207.91 : 311.87 = 63.63 : x - Step 2: Convert to fraction form
207.91/311.87 = 63.63/x - Step 3: Cross multiply
207.91x = 311.87 × 63.63 - Step 4: Simplify right side
207.91x = 19,844.29 - Step 5: Solve for x
x = 19,844.29/207.91 - Step 6: Final answer
x = 95.45
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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.