Finding the Fourth Proportional to 612.13, 918.20 and 201.26
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Solution
The fourth proportional to 612.13, 918.20 and 201.26 is: 301.89
Step by Step Solution
- Step 1: Write the proportion equation
612.13 : 918.20 = 201.26 : x - Step 2: Convert to fraction form
612.13/918.20 = 201.26/x - Step 3: Cross multiply
612.13x = 918.20 × 201.26 - Step 4: Simplify right side
612.13x = 184,795.93 - Step 5: Solve for x
x = 184,795.93/612.13 - Step 6: Final answer
x = 301.89
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Double scale
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Similar ratio
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1.5x scale
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.