Finding the Fourth Proportional to 887.13, 1,329.26 and 642.51
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Solution
The fourth proportional to 887.13, 1,329.26 and 642.51 is: 962.72
Step by Step Solution
- Step 1: Write the proportion equation
887.13 : 1,329.26 = 642.51 : x - Step 2: Convert to fraction form
887.13/1,329.26 = 642.51/x - Step 3: Cross multiply
887.13x = 1,329.26 × 642.51 - Step 4: Simplify right side
887.13x = 854,059.63 - Step 5: Solve for x
x = 854,059.63/887.13 - Step 6: Final answer
x = 962.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.