Finding the Fourth Proportional to 206.99, 310.08 and 115.41
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Solution
The fourth proportional to 206.99, 310.08 and 115.41 is: 172.88
Step by Step Solution
- Step 1: Write the proportion equation
206.99 : 310.08 = 115.41 : x - Step 2: Convert to fraction form
206.99/310.08 = 115.41/x - Step 3: Cross multiply
206.99x = 310.08 × 115.41 - Step 4: Simplify right side
206.99x = 35,784.21 - Step 5: Solve for x
x = 35,784.21/206.99 - Step 6: Final answer
x = 172.88
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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.