Finding the Fourth Proportional to 438.99, 606.21 and 328.26
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Solution
The fourth proportional to 438.99, 606.21 and 328.26 is: 453.30
Step by Step Solution
- Step 1: Write the proportion equation
438.99 : 606.21 = 328.26 : x - Step 2: Convert to fraction form
438.99/606.21 = 328.26/x - Step 3: Cross multiply
438.99x = 606.21 × 328.26 - Step 4: Simplify right side
438.99x = 198,994.49 - Step 5: Solve for x
x = 198,994.49/438.99 - Step 6: Final answer
x = 453.30
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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.