Finding the Fourth Proportional to 438.05, 657.08 and 300.68
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Solution
The fourth proportional to 438.05, 657.08 and 300.68 is: 451.03
Step by Step Solution
- Step 1: Write the proportion equation
438.05 : 657.08 = 300.68 : x - Step 2: Convert to fraction form
438.05/657.08 = 300.68/x - Step 3: Cross multiply
438.05x = 657.08 × 300.68 - Step 4: Simplify right side
438.05x = 197,573.21 - Step 5: Solve for x
x = 197,573.21/438.05 - Step 6: Final answer
x = 451.03
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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.