Finding the Fourth Proportional to 207.01, 309.97 and 129.66
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Solution
The fourth proportional to 207.01, 309.97 and 129.66 is: 194.15
Step by Step Solution
- Step 1: Write the proportion equation
207.01 : 309.97 = 129.66 : x - Step 2: Convert to fraction form
207.01/309.97 = 129.66/x - Step 3: Cross multiply
207.01x = 309.97 × 129.66 - Step 4: Simplify right side
207.01x = 40,190.71 - Step 5: Solve for x
x = 40,190.71/207.01 - Step 6: Final answer
x = 194.15
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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.