Finding the Fourth Proportional to 239.88, 331.08 and 190.68
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Solution
The fourth proportional to 239.88, 331.08 and 190.68 is: 263.17
Step by Step Solution
- Step 1: Write the proportion equation
239.88 : 331.08 = 190.68 : x - Step 2: Convert to fraction form
239.88/331.08 = 190.68/x - Step 3: Cross multiply
239.88x = 331.08 × 190.68 - Step 4: Simplify right side
239.88x = 63,130.33 - Step 5: Solve for x
x = 63,130.33/239.88 - Step 6: Final answer
x = 263.17
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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.