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Finding the Fourth Proportional to 255.51, 352.88 and 252.09

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Solution

The fourth proportional to 255.51, 352.88 and 252.09 is: 348.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.51 : 352.88 = 252.09 : x
  2. Step 2: Convert to fraction form
    255.51/352.88 = 252.09/x
  3. Step 3: Cross multiply
    255.51x = 352.88 × 252.09
  4. Step 4: Simplify right side
    255.51x = 88,957.52
  5. Step 5: Solve for x
    x = 88,957.52/255.51
  6. Step 6: Final answer
    x = 348.16

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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.