Finding the Fourth Proportional to 420.50, 580.26 and 233.99
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Solution
The fourth proportional to 420.50, 580.26 and 233.99 is: 322.89
Step by Step Solution
- Step 1: Write the proportion equation
420.50 : 580.26 = 233.99 : x - Step 2: Convert to fraction form
420.50/580.26 = 233.99/x - Step 3: Cross multiply
420.50x = 580.26 × 233.99 - Step 4: Simplify right side
420.50x = 135,772.14 - Step 5: Solve for x
x = 135,772.14/420.50 - Step 6: Final answer
x = 322.89
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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.