Finding the Fourth Proportional to 280.53, 420.84 and 234.99
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Solution
The fourth proportional to 280.53, 420.84 and 234.99 is: 352.52
Step by Step Solution
- Step 1: Write the proportion equation
280.53 : 420.84 = 234.99 : x - Step 2: Convert to fraction form
280.53/420.84 = 234.99/x - Step 3: Cross multiply
280.53x = 420.84 × 234.99 - Step 4: Simplify right side
280.53x = 98,893.19 - Step 5: Solve for x
x = 98,893.19/280.53 - Step 6: Final answer
x = 352.52
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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.