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Finding the Fourth Proportional to 255.57, 351.72 and 244.64

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Solution

The fourth proportional to 255.57, 351.72 and 244.64 is: 336.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.57 : 351.72 = 244.64 : x
  2. Step 2: Convert to fraction form
    255.57/351.72 = 244.64/x
  3. Step 3: Cross multiply
    255.57x = 351.72 × 244.64
  4. Step 4: Simplify right side
    255.57x = 86,044.78
  5. Step 5: Solve for x
    x = 86,044.78/255.57
  6. Step 6: Final answer
    x = 336.68

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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.