Finding the Fourth Proportional to 985.06, 1,359.39 and 542.99
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Solution
The fourth proportional to 985.06, 1,359.39 and 542.99 is: 749.33
Step by Step Solution
- Step 1: Write the proportion equation
985.06 : 1,359.39 = 542.99 : x - Step 2: Convert to fraction form
985.06/1,359.39 = 542.99/x - Step 3: Cross multiply
985.06x = 1,359.39 × 542.99 - Step 4: Simplify right side
985.06x = 738,135.18 - Step 5: Solve for x
x = 738,135.18/985.06 - Step 6: Final answer
x = 749.33
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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.