Finding the Fourth Proportional to 1,590.28, 2,386.17 and 768.09
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Solution
The fourth proportional to 1,590.28, 2,386.17 and 768.09 is: 1,152.50
Step by Step Solution
- Step 1: Write the proportion equation
1,590.28 : 2,386.17 = 768.09 : x - Step 2: Convert to fraction form
1,590.28/2,386.17 = 768.09/x - Step 3: Cross multiply
1,590.28x = 2,386.17 × 768.09 - Step 4: Simplify right side
1,590.28x = 1,832,793.32 - Step 5: Solve for x
x = 1,832,793.32/1,590.28 - Step 6: Final answer
x = 1,152.50
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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.