Finding the Fourth Proportional to 408.40, 612.81 and 202.97
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Solution
The fourth proportional to 408.40, 612.81 and 202.97 is: 304.55
Step by Step Solution
- Step 1: Write the proportion equation
408.40 : 612.81 = 202.97 : x - Step 2: Convert to fraction form
408.40/612.81 = 202.97/x - Step 3: Cross multiply
408.40x = 612.81 × 202.97 - Step 4: Simplify right side
408.40x = 124,378.98 - Step 5: Solve for x
x = 124,378.98/408.40 - Step 6: Final answer
x = 304.55
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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.