Finding the Third Proportional to 259.50 and 317
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Solution
The third proportional to 259.50 and 317 is: 387.24
Step by Step Solution
- Step 1: Write the proportion equation
259.50 : 317 = 317 : x - Step 2: Convert to fraction form
259.50/317 = 317/x - Step 3: Cross multiply
259.50x = 317 × 317 - Step 4: Simplify right side
259.50x = 100,489 - Step 5: Solve for x
x = 100,489/259.50 - Step 6: Final answer
x = 387.24
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Why These Related Problems?
These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.