Finding the Fourth Proportional to 207.17, 310.11 and 129.87
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Solution
The fourth proportional to 207.17, 310.11 and 129.87 is: 194.40
Step by Step Solution
- Step 1: Write the proportion equation
207.17 : 310.11 = 129.87 : x - Step 2: Convert to fraction form
207.17/310.11 = 129.87/x - Step 3: Cross multiply
207.17x = 310.11 × 129.87 - Step 4: Simplify right side
207.17x = 40,273.99 - Step 5: Solve for x
x = 40,273.99/207.17 - Step 6: Final answer
x = 194.40
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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.