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Finding the Fourth Proportional to 183.42, 273.23 and 172.22

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Solution

The fourth proportional to 183.42, 273.23 and 172.22 is: 256.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.42 : 273.23 = 172.22 : x
  2. Step 2: Convert to fraction form
    183.42/273.23 = 172.22/x
  3. Step 3: Cross multiply
    183.42x = 273.23 × 172.22
  4. Step 4: Simplify right side
    183.42x = 47,053.44
  5. Step 5: Solve for x
    x = 47,053.44/183.42
  6. Step 6: Final answer
    x = 256.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.