Finding the Fourth Proportional to 243.23, 335.79 and 149.99
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Solution
The fourth proportional to 243.23, 335.79 and 149.99 is: 207.07
Step by Step Solution
- Step 1: Write the proportion equation
243.23 : 335.79 = 149.99 : x - Step 2: Convert to fraction form
243.23/335.79 = 149.99/x - Step 3: Cross multiply
243.23x = 335.79 × 149.99 - Step 4: Simplify right side
243.23x = 50,365.14 - Step 5: Solve for x
x = 50,365.14/243.23 - Step 6: Final answer
x = 207.07
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.