Finding the Fourth Proportional to 438.99, 658.08 and 331.26
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Solution
The fourth proportional to 438.99, 658.08 and 331.26 is: 496.58
Step by Step Solution
- Step 1: Write the proportion equation
438.99 : 658.08 = 331.26 : x - Step 2: Convert to fraction form
438.99/658.08 = 331.26/x - Step 3: Cross multiply
438.99x = 658.08 × 331.26 - Step 4: Simplify right side
438.99x = 217,995.58 - Step 5: Solve for x
x = 217,995.58/438.99 - Step 6: Final answer
x = 496.58
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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.