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Finding the Fourth Proportional to 250.29, 345.33 and 161.80

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Solution

The fourth proportional to 250.29, 345.33 and 161.80 is: 223.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.29 : 345.33 = 161.80 : x
  2. Step 2: Convert to fraction form
    250.29/345.33 = 161.80/x
  3. Step 3: Cross multiply
    250.29x = 345.33 × 161.80
  4. Step 4: Simplify right side
    250.29x = 55,873.53
  5. Step 5: Solve for x
    x = 55,873.53/250.29
  6. Step 6: Final answer
    x = 223.24

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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.