Finding the Fourth Proportional to 1,138.13, 1,707.19 and 368.63
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Solution
The fourth proportional to 1,138.13, 1,707.19 and 368.63 is: 552.94
Step by Step Solution
- Step 1: Write the proportion equation
1,138.13 : 1,707.19 = 368.63 : x - Step 2: Convert to fraction form
1,138.13/1,707.19 = 368.63/x - Step 3: Cross multiply
1,138.13x = 1,707.19 × 368.63 - Step 4: Simplify right side
1,138.13x = 629,311.99 - Step 5: Solve for x
x = 629,311.99/1,138.13 - Step 6: Final answer
x = 552.94
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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.