Finding the Fourth Proportional to 984.79, 1,358.95 and 542.68
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Solution
The fourth proportional to 984.79, 1,358.95 and 542.68 is: 748.86
Step by Step Solution
- Step 1: Write the proportion equation
984.79 : 1,358.95 = 542.68 : x - Step 2: Convert to fraction form
984.79/1,358.95 = 542.68/x - Step 3: Cross multiply
984.79x = 1,358.95 × 542.68 - Step 4: Simplify right side
984.79x = 737,468.19 - Step 5: Solve for x
x = 737,468.19/984.79 - Step 6: Final answer
x = 748.86
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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.