Finding the Fourth Proportional to 207.80, 286.75 and 124.95
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Solution
The fourth proportional to 207.80, 286.75 and 124.95 is: 172.42
Step by Step Solution
- Step 1: Write the proportion equation
207.80 : 286.75 = 124.95 : x - Step 2: Convert to fraction form
207.80/286.75 = 124.95/x - Step 3: Cross multiply
207.80x = 286.75 × 124.95 - Step 4: Simplify right side
207.80x = 35,829.10 - Step 5: Solve for x
x = 35,829.10/207.80 - Step 6: Final answer
x = 172.42
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.