Finding the Fourth Proportional to 441.18, 609.18 and 421.35
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Solution
The fourth proportional to 441.18, 609.18 and 421.35 is: 581.80
Step by Step Solution
- Step 1: Write the proportion equation
441.18 : 609.18 = 421.35 : x - Step 2: Convert to fraction form
441.18/609.18 = 421.35/x - Step 3: Cross multiply
441.18x = 609.18 × 421.35 - Step 4: Simplify right side
441.18x = 256,677.99 - Step 5: Solve for x
x = 256,677.99/441.18 - Step 6: Final answer
x = 581.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.