Finding the Fourth Proportional to 889.21, 1,228.08 and 692.44
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Solution
The fourth proportional to 889.21, 1,228.08 and 692.44 is: 956.32
Step by Step Solution
- Step 1: Write the proportion equation
889.21 : 1,228.08 = 692.44 : x - Step 2: Convert to fraction form
889.21/1,228.08 = 692.44/x - Step 3: Cross multiply
889.21x = 1,228.08 × 692.44 - Step 4: Simplify right side
889.21x = 850,367.08 - Step 5: Solve for x
x = 850,367.08/889.21 - Step 6: Final answer
x = 956.32
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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.