Finding the Fourth Proportional to 1,404.51, 2,106.65 and 480.09
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Solution
The fourth proportional to 1,404.51, 2,106.65 and 480.09 is: 720.09
Step by Step Solution
- Step 1: Write the proportion equation
1,404.51 : 2,106.65 = 480.09 : x - Step 2: Convert to fraction form
1,404.51/2,106.65 = 480.09/x - Step 3: Cross multiply
1,404.51x = 2,106.65 × 480.09 - Step 4: Simplify right side
1,404.51x = 1,011,379.20 - Step 5: Solve for x
x = 1,011,379.20/1,404.51 - Step 6: Final answer
x = 720.09
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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.