Finding the Fourth Proportional to 1,555.15, 2,331.99 and 630
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Solution
The fourth proportional to 1,555.15, 2,331.99 and 630 is: 944.70
Step by Step Solution
- Step 1: Write the proportion equation
1,555.15 : 2,331.99 = 630 : x - Step 2: Convert to fraction form
1,555.15/2,331.99 = 630/x - Step 3: Cross multiply
1,555.15x = 2,331.99 × 630 - Step 4: Simplify right side
1,555.15x = 1,469,150.55 - Step 5: Solve for x
x = 1,469,150.55/1,555.15 - Step 6: Final answer
x = 944.70
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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.