Finding the Fourth Proportional to 207.14, 309.92 and 140.99
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Solution
The fourth proportional to 207.14, 309.92 and 140.99 is: 210.94
Step by Step Solution
- Step 1: Write the proportion equation
207.14 : 309.92 = 140.99 : x - Step 2: Convert to fraction form
207.14/309.92 = 140.99/x - Step 3: Cross multiply
207.14x = 309.92 × 140.99 - Step 4: Simplify right side
207.14x = 43,693.37 - Step 5: Solve for x
x = 43,693.37/207.14 - Step 6: Final answer
x = 210.94
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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.