Finding the Fourth Proportional to 188.01, 281.43 and 149.31
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Solution
The fourth proportional to 188.01, 281.43 and 149.31 is: 223.50
Step by Step Solution
- Step 1: Write the proportion equation
188.01 : 281.43 = 149.31 : x - Step 2: Convert to fraction form
188.01/281.43 = 149.31/x - Step 3: Cross multiply
188.01x = 281.43 × 149.31 - Step 4: Simplify right side
188.01x = 42,020.31 - Step 5: Solve for x
x = 42,020.31/188.01 - Step 6: Final answer
x = 223.50
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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.