Finding the Fourth Proportional to 420.44, 631.26 and 365.63
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Solution
The fourth proportional to 420.44, 631.26 and 365.63 is: 548.97
Step by Step Solution
- Step 1: Write the proportion equation
420.44 : 631.26 = 365.63 : x - Step 2: Convert to fraction form
420.44/631.26 = 365.63/x - Step 3: Cross multiply
420.44x = 631.26 × 365.63 - Step 4: Simplify right side
420.44x = 230,804.44 - Step 5: Solve for x
x = 230,804.44/420.44 - Step 6: Final answer
x = 548.97
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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.