Finding the Fourth Proportional to 387.49, 580.18 and 283.99
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Solution
The fourth proportional to 387.49, 580.18 and 283.99 is: 425.21
Step by Step Solution
- Step 1: Write the proportion equation
387.49 : 580.18 = 283.99 : x - Step 2: Convert to fraction form
387.49/580.18 = 283.99/x - Step 3: Cross multiply
387.49x = 580.18 × 283.99 - Step 4: Simplify right side
387.49x = 164,761.00 - Step 5: Solve for x
x = 164,761.00/387.49 - Step 6: Final answer
x = 425.21
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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.