Finding the Fourth Proportional to 423.41, 635.09 and 115.26
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Solution
The fourth proportional to 423.41, 635.09 and 115.26 is: 172.88
Step by Step Solution
- Step 1: Write the proportion equation
423.41 : 635.09 = 115.26 : x - Step 2: Convert to fraction form
423.41/635.09 = 115.26/x - Step 3: Cross multiply
423.41x = 635.09 × 115.26 - Step 4: Simplify right side
423.41x = 73,197.52 - Step 5: Solve for x
x = 73,197.52/423.41 - Step 6: Final answer
x = 172.88
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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.