Finding the Fourth Proportional to 283.20, 424.95 and 120.99
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Solution
The fourth proportional to 283.20, 424.95 and 120.99 is: 181.56
Step by Step Solution
- Step 1: Write the proportion equation
283.20 : 424.95 = 120.99 : x - Step 2: Convert to fraction form
283.20/424.95 = 120.99/x - Step 3: Cross multiply
283.20x = 424.95 × 120.99 - Step 4: Simplify right side
283.20x = 51,415.84 - Step 5: Solve for x
x = 51,415.84/283.20 - Step 6: Final answer
x = 181.56
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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.