Finding the Fourth Proportional to 422.93, 633.99 and 312.77
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Solution
The fourth proportional to 422.93, 633.99 and 312.77 is: 468.86
Step by Step Solution
- Step 1: Write the proportion equation
422.93 : 633.99 = 312.77 : x - Step 2: Convert to fraction form
422.93/633.99 = 312.77/x - Step 3: Cross multiply
422.93x = 633.99 × 312.77 - Step 4: Simplify right side
422.93x = 198,293.05 - Step 5: Solve for x
x = 198,293.05/422.93 - Step 6: Final answer
x = 468.86
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.