Finding the Fourth Proportional to 1,146.09, 1,581.68 and 648.75
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Solution
The fourth proportional to 1,146.09, 1,581.68 and 648.75 is: 895.32
Step by Step Solution
- Step 1: Write the proportion equation
1,146.09 : 1,581.68 = 648.75 : x - Step 2: Convert to fraction form
1,146.09/1,581.68 = 648.75/x - Step 3: Cross multiply
1,146.09x = 1,581.68 × 648.75 - Step 4: Simplify right side
1,146.09x = 1,026,114.90 - Step 5: Solve for x
x = 1,026,114.90/1,146.09 - Step 6: Final answer
x = 895.32
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Double scale
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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.