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Finding the Fourth Proportional to 220.68, 303.63 and 181.19

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Solution

The fourth proportional to 220.68, 303.63 and 181.19 is: 249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.68 : 303.63 = 181.19 : x
  2. Step 2: Convert to fraction form
    220.68/303.63 = 181.19/x
  3. Step 3: Cross multiply
    220.68x = 303.63 × 181.19
  4. Step 4: Simplify right side
    220.68x = 55,014.72
  5. Step 5: Solve for x
    x = 55,014.72/220.68
  6. Step 6: Final answer
    x = 249.30

Related Problems

Find fourth proportional to 110.34, 151.82 and 90.60
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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.