Finding the Fourth Proportional to 283.26, 425.08 and 138.98
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Solution
The fourth proportional to 283.26, 425.08 and 138.98 is: 208.56
Step by Step Solution
- Step 1: Write the proportion equation
283.26 : 425.08 = 138.98 : x - Step 2: Convert to fraction form
283.26/425.08 = 138.98/x - Step 3: Cross multiply
283.26x = 425.08 × 138.98 - Step 4: Simplify right side
283.26x = 59,077.62 - Step 5: Solve for x
x = 59,077.62/283.26 - Step 6: Final answer
x = 208.56
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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.