Finding the Fourth Proportional to 257.19, 385.94 and 94.99
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Solution
The fourth proportional to 257.19, 385.94 and 94.99 is: 142.54
Step by Step Solution
- Step 1: Write the proportion equation
257.19 : 385.94 = 94.99 : x - Step 2: Convert to fraction form
257.19/385.94 = 94.99/x - Step 3: Cross multiply
257.19x = 385.94 × 94.99 - Step 4: Simplify right side
257.19x = 36,660.68 - Step 5: Solve for x
x = 36,660.68/257.19 - Step 6: Final answer
x = 142.54
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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.