Finding the Fourth Proportional to 1,527.65, 2,291.43 and 432
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Solution
The fourth proportional to 1,527.65, 2,291.43 and 432 is: 647.99
Step by Step Solution
- Step 1: Write the proportion equation
1,527.65 : 2,291.43 = 432 : x - Step 2: Convert to fraction form
1,527.65/2,291.43 = 432/x - Step 3: Cross multiply
1,527.65x = 2,291.43 × 432 - Step 4: Simplify right side
1,527.65x = 989,899.38 - Step 5: Solve for x
x = 989,899.38/1,527.65 - Step 6: Final answer
x = 647.99
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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.