Finding the Fourth Proportional to 856.05, 1,284.99 and 753.99
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Solution
The fourth proportional to 856.05, 1,284.99 and 753.99 is: 1,131.79
Step by Step Solution
- Step 1: Write the proportion equation
856.05 : 1,284.99 = 753.99 : x - Step 2: Convert to fraction form
856.05/1,284.99 = 753.99/x - Step 3: Cross multiply
856.05x = 1,284.99 × 753.99 - Step 4: Simplify right side
856.05x = 968,869.61 - Step 5: Solve for x
x = 968,869.61/856.05 - Step 6: Final answer
x = 1,131.79
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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.