Finding the Fourth Proportional to 239.93, 331.08 and 151.42
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Solution
The fourth proportional to 239.93, 331.08 and 151.42 is: 208.95
Step by Step Solution
- Step 1: Write the proportion equation
239.93 : 331.08 = 151.42 : x - Step 2: Convert to fraction form
239.93/331.08 = 151.42/x - Step 3: Cross multiply
239.93x = 331.08 × 151.42 - Step 4: Simplify right side
239.93x = 50,131.31 - Step 5: Solve for x
x = 50,131.31/239.93 - Step 6: Final answer
x = 208.95
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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.