Finding the Fourth Proportional to 475.20, 655.68 and 327.60
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Solution
The fourth proportional to 475.20, 655.68 and 327.60 is: 452.02
Step by Step Solution
- Step 1: Write the proportion equation
475.20 : 655.68 = 327.60 : x - Step 2: Convert to fraction form
475.20/655.68 = 327.60/x - Step 3: Cross multiply
475.20x = 655.68 × 327.60 - Step 4: Simplify right side
475.20x = 214,800.77 - Step 5: Solve for x
x = 214,800.77/475.20 - Step 6: Final answer
x = 452.02
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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.