Finding the Fourth Proportional to 886.13, 1,329 and 842.21
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Solution
The fourth proportional to 886.13, 1,329 and 842.21 is: 1,263.14
Step by Step Solution
- Step 1: Write the proportion equation
886.13 : 1,329 = 842.21 : x - Step 2: Convert to fraction form
886.13/1,329 = 842.21/x - Step 3: Cross multiply
886.13x = 1,329 × 842.21 - Step 4: Simplify right side
886.13x = 1,119,300.41 - Step 5: Solve for x
x = 1,119,300.41/886.13 - Step 6: Final answer
x = 1,263.14
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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.