Finding the Fourth Proportional to 283.20, 424.93 and 129.09
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Solution
The fourth proportional to 283.20, 424.93 and 129.09 is: 193.70
Step by Step Solution
- Step 1: Write the proportion equation
283.20 : 424.93 = 129.09 : x - Step 2: Convert to fraction form
283.20/424.93 = 129.09/x - Step 3: Cross multiply
283.20x = 424.93 × 129.09 - Step 4: Simplify right side
283.20x = 54,855.73 - Step 5: Solve for x
x = 54,855.73/283.20 - Step 6: Final answer
x = 193.70
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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.