Finding the Fourth Proportional to 890.68, 1,336.02 and 457.96
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Solution
The fourth proportional to 890.68, 1,336.02 and 457.96 is: 686.94
Step by Step Solution
- Step 1: Write the proportion equation
890.68 : 1,336.02 = 457.96 : x - Step 2: Convert to fraction form
890.68/1,336.02 = 457.96/x - Step 3: Cross multiply
890.68x = 1,336.02 × 457.96 - Step 4: Simplify right side
890.68x = 611,843.72 - Step 5: Solve for x
x = 611,843.72/890.68 - Step 6: Final answer
x = 686.94
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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.