Finding the Fourth Proportional to 1,018.68, 1,528.05 and 402.54
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Solution
The fourth proportional to 1,018.68, 1,528.05 and 402.54 is: 603.82
Step by Step Solution
- Step 1: Write the proportion equation
1,018.68 : 1,528.05 = 402.54 : x - Step 2: Convert to fraction form
1,018.68/1,528.05 = 402.54/x - Step 3: Cross multiply
1,018.68x = 1,528.05 × 402.54 - Step 4: Simplify right side
1,018.68x = 615,101.25 - Step 5: Solve for x
x = 615,101.25/1,018.68 - Step 6: Final answer
x = 603.82
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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.