Finding the Fourth Proportional to 325.60, 487.79 and 163.40
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Solution
The fourth proportional to 325.60, 487.79 and 163.40 is: 244.79
Step by Step Solution
- Step 1: Write the proportion equation
325.60 : 487.79 = 163.40 : x - Step 2: Convert to fraction form
325.60/487.79 = 163.40/x - Step 3: Cross multiply
325.60x = 487.79 × 163.40 - Step 4: Simplify right side
325.60x = 79,702.24 - Step 5: Solve for x
x = 79,702.24/325.60 - Step 6: Final answer
x = 244.79
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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.