Finding the Fourth Proportional to 257.11, 386.21 and 160.99
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Solution
The fourth proportional to 257.11, 386.21 and 160.99 is: 241.83
Step by Step Solution
- Step 1: Write the proportion equation
257.11 : 386.21 = 160.99 : x - Step 2: Convert to fraction form
257.11/386.21 = 160.99/x - Step 3: Cross multiply
257.11x = 386.21 × 160.99 - Step 4: Simplify right side
257.11x = 62,175.95 - Step 5: Solve for x
x = 62,175.95/257.11 - Step 6: Final answer
x = 241.83
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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.