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Finding the Fourth Proportional to 255.01, 351.64 and 218.29

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Solution

The fourth proportional to 255.01, 351.64 and 218.29 is: 301.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.01 : 351.64 = 218.29 : x
  2. Step 2: Convert to fraction form
    255.01/351.64 = 218.29/x
  3. Step 3: Cross multiply
    255.01x = 351.64 × 218.29
  4. Step 4: Simplify right side
    255.01x = 76,759.50
  5. Step 5: Solve for x
    x = 76,759.50/255.01
  6. Step 6: Final answer
    x = 301.01

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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.