Finding the Fourth Proportional to 207.18, 310.79 and 125.06
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Solution
The fourth proportional to 207.18, 310.79 and 125.06 is: 187.60
Step by Step Solution
- Step 1: Write the proportion equation
207.18 : 310.79 = 125.06 : x - Step 2: Convert to fraction form
207.18/310.79 = 125.06/x - Step 3: Cross multiply
207.18x = 310.79 × 125.06 - Step 4: Simplify right side
207.18x = 38,866.16 - Step 5: Solve for x
x = 38,866.16/207.18 - Step 6: Final answer
x = 187.60
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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.