Finding the Fourth Proportional to 989.12, 1,364.93 and 546.99
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Solution
The fourth proportional to 989.12, 1,364.93 and 546.99 is: 754.82
Step by Step Solution
- Step 1: Write the proportion equation
989.12 : 1,364.93 = 546.99 : x - Step 2: Convert to fraction form
989.12/1,364.93 = 546.99/x - Step 3: Cross multiply
989.12x = 1,364.93 × 546.99 - Step 4: Simplify right side
989.12x = 746,603.06 - Step 5: Solve for x
x = 746,603.06/989.12 - Step 6: Final answer
x = 754.82
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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.