Finding the Fourth Proportional to 345.91, 518.58 and 163.21
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Solution
The fourth proportional to 345.91, 518.58 and 163.21 is: 244.68
Step by Step Solution
- Step 1: Write the proportion equation
345.91 : 518.58 = 163.21 : x - Step 2: Convert to fraction form
345.91/518.58 = 163.21/x - Step 3: Cross multiply
345.91x = 518.58 × 163.21 - Step 4: Simplify right side
345.91x = 84,637.44 - Step 5: Solve for x
x = 84,637.44/345.91 - Step 6: Final answer
x = 244.68
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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.