Finding the Fourth Proportional to 424.26, 636.26 and 135.63
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Solution
The fourth proportional to 424.26, 636.26 and 135.63 is: 203.41
Step by Step Solution
- Step 1: Write the proportion equation
424.26 : 636.26 = 135.63 : x - Step 2: Convert to fraction form
424.26/636.26 = 135.63/x - Step 3: Cross multiply
424.26x = 636.26 × 135.63 - Step 4: Simplify right side
424.26x = 86,297.63 - Step 5: Solve for x
x = 86,297.63/424.26 - Step 6: Final answer
x = 203.41
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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.