Finding the Fourth Proportional to 688, 949.52 and 412
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Solution
The fourth proportional to 688, 949.52 and 412 is: 568.61
Step by Step Solution
- Step 1: Write the proportion equation
688 : 949.52 = 412 : x - Step 2: Convert to fraction form
688/949.52 = 412/x - Step 3: Cross multiply
688x = 949.52 × 412 - Step 4: Simplify right side
688x = 391,202.24 - Step 5: Solve for x
x = 391,202.24/688 - Step 6: Final answer
x = 568.61
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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.