Finding the Fourth Proportional to 434.70, 652.08 and 126.56
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Solution
The fourth proportional to 434.70, 652.08 and 126.56 is: 189.84
Step by Step Solution
- Step 1: Write the proportion equation
434.70 : 652.08 = 126.56 : x - Step 2: Convert to fraction form
434.70/652.08 = 126.56/x - Step 3: Cross multiply
434.70x = 652.08 × 126.56 - Step 4: Simplify right side
434.70x = 82,523.98 - Step 5: Solve for x
x = 82,523.98/434.70 - Step 6: Final answer
x = 189.84
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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.