Finding the Fourth Proportional to 1,126.17, 1,554 and 654.09
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Solution
The fourth proportional to 1,126.17, 1,554 and 654.09 is: 902.58
Step by Step Solution
- Step 1: Write the proportion equation
1,126.17 : 1,554 = 654.09 : x - Step 2: Convert to fraction form
1,126.17/1,554 = 654.09/x - Step 3: Cross multiply
1,126.17x = 1,554 × 654.09 - Step 4: Simplify right side
1,126.17x = 1,016,455.86 - Step 5: Solve for x
x = 1,016,455.86/1,126.17 - Step 6: Final answer
x = 902.58
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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.