Finding the Fourth Proportional to 239.21, 329.87 and 213.02
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Solution
The fourth proportional to 239.21, 329.87 and 213.02 is: 293.75
Step by Step Solution
- Step 1: Write the proportion equation
239.21 : 329.87 = 213.02 : x - Step 2: Convert to fraction form
239.21/329.87 = 213.02/x - Step 3: Cross multiply
239.21x = 329.87 × 213.02 - Step 4: Simplify right side
239.21x = 70,268.91 - Step 5: Solve for x
x = 70,268.91/239.21 - Step 6: Final answer
x = 293.75
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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.