Finding the Fourth Proportional to 207.08, 310.63 and 70.13
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Solution
The fourth proportional to 207.08, 310.63 and 70.13 is: 105.20
Step by Step Solution
- Step 1: Write the proportion equation
207.08 : 310.63 = 70.13 : x - Step 2: Convert to fraction form
207.08/310.63 = 70.13/x - Step 3: Cross multiply
207.08x = 310.63 × 70.13 - Step 4: Simplify right side
207.08x = 21,785.08 - Step 5: Solve for x
x = 21,785.08/207.08 - Step 6: Final answer
x = 105.20
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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.