Finding the Fourth Proportional to 385.40, 532.29 and 254.99
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Solution
The fourth proportional to 385.40, 532.29 and 254.99 is: 352.18
Step by Step Solution
- Step 1: Write the proportion equation
385.40 : 532.29 = 254.99 : x - Step 2: Convert to fraction form
385.40/532.29 = 254.99/x - Step 3: Cross multiply
385.40x = 532.29 × 254.99 - Step 4: Simplify right side
385.40x = 135,728.63 - Step 5: Solve for x
x = 135,728.63/385.40 - Step 6: Final answer
x = 352.18
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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.