Finding the Fourth Proportional to 324.78, 487.26 and 170.75
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Solution
The fourth proportional to 324.78, 487.26 and 170.75 is: 256.16
Step by Step Solution
- Step 1: Write the proportion equation
324.78 : 487.26 = 170.75 : x - Step 2: Convert to fraction form
324.78/487.26 = 170.75/x - Step 3: Cross multiply
324.78x = 487.26 × 170.75 - Step 4: Simplify right side
324.78x = 83,197.21 - Step 5: Solve for x
x = 83,197.21/324.78 - Step 6: Final answer
x = 256.16
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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.