Finding the Fourth Proportional to 239.68, 330.84 and 177.60
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Solution
The fourth proportional to 239.68, 330.84 and 177.60 is: 245.15
Step by Step Solution
- Step 1: Write the proportion equation
239.68 : 330.84 = 177.60 : x - Step 2: Convert to fraction form
239.68/330.84 = 177.60/x - Step 3: Cross multiply
239.68x = 330.84 × 177.60 - Step 4: Simplify right side
239.68x = 58,757.18 - Step 5: Solve for x
x = 58,757.18/239.68 - Step 6: Final answer
x = 245.15
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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.