Finding the Fourth Proportional to 327.13, 490.70 and 153.70
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Solution
The fourth proportional to 327.13, 490.70 and 153.70 is: 230.55
Step by Step Solution
- Step 1: Write the proportion equation
327.13 : 490.70 = 153.70 : x - Step 2: Convert to fraction form
327.13/490.70 = 153.70/x - Step 3: Cross multiply
327.13x = 490.70 × 153.70 - Step 4: Simplify right side
327.13x = 75,418.67 - Step 5: Solve for x
x = 75,418.67/327.13 - Step 6: Final answer
x = 230.55
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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.