Finding the Fourth Proportional to 750.21, 1,035.21 and 418.65
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Solution
The fourth proportional to 750.21, 1,035.21 and 418.65 is: 577.69
Step by Step Solution
- Step 1: Write the proportion equation
750.21 : 1,035.21 = 418.65 : x - Step 2: Convert to fraction form
750.21/1,035.21 = 418.65/x - Step 3: Cross multiply
750.21x = 1,035.21 × 418.65 - Step 4: Simplify right side
750.21x = 433,390.67 - Step 5: Solve for x
x = 433,390.67/750.21 - Step 6: Final answer
x = 577.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.