Finding the Fourth Proportional to 1,564, 2,344.32 and 639.12
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Solution
The fourth proportional to 1,564, 2,344.32 and 639.12 is: 957.99
Step by Step Solution
- Step 1: Write the proportion equation
1,564 : 2,344.32 = 639.12 : x - Step 2: Convert to fraction form
1,564/2,344.32 = 639.12/x - Step 3: Cross multiply
1,564x = 2,344.32 × 639.12 - Step 4: Simplify right side
1,564x = 1,498,301.80 - Step 5: Solve for x
x = 1,498,301.80/1,564 - Step 6: Final answer
x = 957.99
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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.