Finding the Fourth Proportional to 6.25, 8.63 and 4.09
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Solution
The fourth proportional to 6.25, 8.63 and 4.09 is: 5.65
Step by Step Solution
- Step 1: Write the proportion equation
6.25 : 8.63 = 4.09 : x - Step 2: Convert to fraction form
6.25/8.63 = 4.09/x - Step 3: Cross multiply
6.25x = 8.63 × 4.09 - Step 4: Simplify right side
6.25x = 35.30 - Step 5: Solve for x
x = 35.30/6.25 - Step 6: Final answer
x = 5.65
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1.5x scale
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.