Finding the Fourth Proportional to 821.02, 1,132.99 and 447.99
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Solution
The fourth proportional to 821.02, 1,132.99 and 447.99 is: 618.22
Step by Step Solution
- Step 1: Write the proportion equation
821.02 : 1,132.99 = 447.99 : x - Step 2: Convert to fraction form
821.02/1,132.99 = 447.99/x - Step 3: Cross multiply
821.02x = 1,132.99 × 447.99 - Step 4: Simplify right side
821.02x = 507,565.79 - Step 5: Solve for x
x = 507,565.79/821.02 - Step 6: Final answer
x = 618.22
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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.