Finding the Fourth Proportional to 407.99, 612.18 and 134.15
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Solution
The fourth proportional to 407.99, 612.18 and 134.15 is: 201.28
Step by Step Solution
- Step 1: Write the proportion equation
407.99 : 612.18 = 134.15 : x - Step 2: Convert to fraction form
407.99/612.18 = 134.15/x - Step 3: Cross multiply
407.99x = 612.18 × 134.15 - Step 4: Simplify right side
407.99x = 82,120.89 - Step 5: Solve for x
x = 82,120.89/407.99 - Step 6: Final answer
x = 201.28
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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.