Finding the Fourth Proportional to 438.36, 657.74 and 232.88
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Solution
The fourth proportional to 438.36, 657.74 and 232.88 is: 349.43
Step by Step Solution
- Step 1: Write the proportion equation
438.36 : 657.74 = 232.88 : x - Step 2: Convert to fraction form
438.36/657.74 = 232.88/x - Step 3: Cross multiply
438.36x = 657.74 × 232.88 - Step 4: Simplify right side
438.36x = 153,174.49 - Step 5: Solve for x
x = 153,174.49/438.36 - Step 6: Final answer
x = 349.43
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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.