Finding the Fourth Proportional to 1,452.08, 2,178.20 and 426
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Solution
The fourth proportional to 1,452.08, 2,178.20 and 426 is: 639.02
Step by Step Solution
- Step 1: Write the proportion equation
1,452.08 : 2,178.20 = 426 : x - Step 2: Convert to fraction form
1,452.08/2,178.20 = 426/x - Step 3: Cross multiply
1,452.08x = 2,178.20 × 426 - Step 4: Simplify right side
1,452.08x = 927,913.20 - Step 5: Solve for x
x = 927,913.20/1,452.08 - Step 6: Final answer
x = 639.02
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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.