Finding the Fourth Proportional to 1,025.50, 1,538.35 and 331.99
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Solution
The fourth proportional to 1,025.50, 1,538.35 and 331.99 is: 498.02
Step by Step Solution
- Step 1: Write the proportion equation
1,025.50 : 1,538.35 = 331.99 : x - Step 2: Convert to fraction form
1,025.50/1,538.35 = 331.99/x - Step 3: Cross multiply
1,025.50x = 1,538.35 × 331.99 - Step 4: Simplify right side
1,025.50x = 510,716.82 - Step 5: Solve for x
x = 510,716.82/1,025.50 - Step 6: Final answer
x = 498.02
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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.