Finding the Fourth Proportional to 542.10, 747.87 and 305.99
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Solution
The fourth proportional to 542.10, 747.87 and 305.99 is: 422.14
Step by Step Solution
- Step 1: Write the proportion equation
542.10 : 747.87 = 305.99 : x - Step 2: Convert to fraction form
542.10/747.87 = 305.99/x - Step 3: Cross multiply
542.10x = 747.87 × 305.99 - Step 4: Simplify right side
542.10x = 228,840.74 - Step 5: Solve for x
x = 228,840.74/542.10 - Step 6: Final answer
x = 422.14
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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.