Finding the Fourth Proportional to 386.24, 580.70 and 203.99
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Solution
The fourth proportional to 386.24, 580.70 and 203.99 is: 306.69
Step by Step Solution
- Step 1: Write the proportion equation
386.24 : 580.70 = 203.99 : x - Step 2: Convert to fraction form
386.24/580.70 = 203.99/x - Step 3: Cross multiply
386.24x = 580.70 × 203.99 - Step 4: Simplify right side
386.24x = 118,454.60 - Step 5: Solve for x
x = 118,454.60/386.24 - Step 6: Final answer
x = 306.69
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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.