Finding the Fourth Proportional to 761.22, 1,048.08 and 648.99
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Solution
The fourth proportional to 761.22, 1,048.08 and 648.99 is: 893.56
Step by Step Solution
- Step 1: Write the proportion equation
761.22 : 1,048.08 = 648.99 : x - Step 2: Convert to fraction form
761.22/1,048.08 = 648.99/x - Step 3: Cross multiply
761.22x = 1,048.08 × 648.99 - Step 4: Simplify right side
761.22x = 680,193.44 - Step 5: Solve for x
x = 680,193.44/761.22 - Step 6: Final answer
x = 893.56
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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.