Finding the Fourth Proportional to 90.23, 124.61 and 69.53
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Solution
The fourth proportional to 90.23, 124.61 and 69.53 is: 96.02
Step by Step Solution
- Step 1: Write the proportion equation
90.23 : 124.61 = 69.53 : x - Step 2: Convert to fraction form
90.23/124.61 = 69.53/x - Step 3: Cross multiply
90.23x = 124.61 × 69.53 - Step 4: Simplify right side
90.23x = 8,663.16 - Step 5: Solve for x
x = 8,663.16/90.23 - Step 6: Final answer
x = 96.02
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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.