Finding the Fourth Proportional to 239.28, 358.96 and 129.62
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Solution
The fourth proportional to 239.28, 358.96 and 129.62 is: 194.45
Step by Step Solution
- Step 1: Write the proportion equation
239.28 : 358.96 = 129.62 : x - Step 2: Convert to fraction form
239.28/358.96 = 129.62/x - Step 3: Cross multiply
239.28x = 358.96 × 129.62 - Step 4: Simplify right side
239.28x = 46,528.40 - Step 5: Solve for x
x = 46,528.40/239.28 - Step 6: Final answer
x = 194.45
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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.