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Finding the Fourth Proportional to 255.01, 351.89 and 161.75

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Solution

The fourth proportional to 255.01, 351.89 and 161.75 is: 223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.01 : 351.89 = 161.75 : x
  2. Step 2: Convert to fraction form
    255.01/351.89 = 161.75/x
  3. Step 3: Cross multiply
    255.01x = 351.89 × 161.75
  4. Step 4: Simplify right side
    255.01x = 56,918.21
  5. Step 5: Solve for x
    x = 56,918.21/255.01
  6. Step 6: Final answer
    x = 223.20

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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.