Finding the Fourth Proportional to 1,079.68, 1,619.34 and 310
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Solution
The fourth proportional to 1,079.68, 1,619.34 and 310 is: 464.95
Step by Step Solution
- Step 1: Write the proportion equation
1,079.68 : 1,619.34 = 310 : x - Step 2: Convert to fraction form
1,079.68/1,619.34 = 310/x - Step 3: Cross multiply
1,079.68x = 1,619.34 × 310 - Step 4: Simplify right side
1,079.68x = 501,995.40 - Step 5: Solve for x
x = 501,995.40/1,079.68 - Step 6: Final answer
x = 464.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.