Finding the Fourth Proportional to 498, 687.30 and 291
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Solution
The fourth proportional to 498, 687.30 and 291 is: 401.62
Step by Step Solution
- Step 1: Write the proportion equation
498 : 687.30 = 291 : x - Step 2: Convert to fraction form
498/687.30 = 291/x - Step 3: Cross multiply
498x = 687.30 × 291 - Step 4: Simplify right side
498x = 200,004.30 - Step 5: Solve for x
x = 200,004.30/498 - Step 6: Final answer
x = 401.62
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.