Finding the Fourth Proportional to 1,163.19, 1,605.08 and 665.99
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Solution
The fourth proportional to 1,163.19, 1,605.08 and 665.99 is: 918.99
Step by Step Solution
- Step 1: Write the proportion equation
1,163.19 : 1,605.08 = 665.99 : x - Step 2: Convert to fraction form
1,163.19/1,605.08 = 665.99/x - Step 3: Cross multiply
1,163.19x = 1,605.08 × 665.99 - Step 4: Simplify right side
1,163.19x = 1,068,955.87 - Step 5: Solve for x
x = 1,068,955.87/1,163.19 - Step 6: Final answer
x = 918.99
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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.