Finding the Fourth Proportional to 207.63, 311.07 and 130.48
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Solution
The fourth proportional to 207.63, 311.07 and 130.48 is: 195.48
Step by Step Solution
- Step 1: Write the proportion equation
207.63 : 311.07 = 130.48 : x - Step 2: Convert to fraction form
207.63/311.07 = 130.48/x - Step 3: Cross multiply
207.63x = 311.07 × 130.48 - Step 4: Simplify right side
207.63x = 40,588.13 - Step 5: Solve for x
x = 40,588.13/207.63 - Step 6: Final answer
x = 195.48
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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.