Finding the Fourth Proportional to 281.16, 387.99 and 170.63
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Solution
The fourth proportional to 281.16, 387.99 and 170.63 is: 235.46
Step by Step Solution
- Step 1: Write the proportion equation
281.16 : 387.99 = 170.63 : x - Step 2: Convert to fraction form
281.16/387.99 = 170.63/x - Step 3: Cross multiply
281.16x = 387.99 × 170.63 - Step 4: Simplify right side
281.16x = 66,202.73 - Step 5: Solve for x
x = 66,202.73/281.16 - Step 6: Final answer
x = 235.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.