Finding the Fourth Proportional to 465.05, 641.18 and 402.05
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Solution
The fourth proportional to 465.05, 641.18 and 402.05 is: 554.32
Step by Step Solution
- Step 1: Write the proportion equation
465.05 : 641.18 = 402.05 : x - Step 2: Convert to fraction form
465.05/641.18 = 402.05/x - Step 3: Cross multiply
465.05x = 641.18 × 402.05 - Step 4: Simplify right side
465.05x = 257,784.22 - Step 5: Solve for x
x = 257,784.22/465.05 - Step 6: Final answer
x = 554.32
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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.