Finding the Fourth Proportional to 207.36, 311.04 and 79.14
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Solution
The fourth proportional to 207.36, 311.04 and 79.14 is: 118.71
Step by Step Solution
- Step 1: Write the proportion equation
207.36 : 311.04 = 79.14 : x - Step 2: Convert to fraction form
207.36/311.04 = 79.14/x - Step 3: Cross multiply
207.36x = 311.04 × 79.14 - Step 4: Simplify right side
207.36x = 24,615.71 - Step 5: Solve for x
x = 24,615.71/207.36 - Step 6: Final answer
x = 118.71
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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.