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Finding the Fourth Proportional to 255.54, 351.72 and 224.54

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Solution

The fourth proportional to 255.54, 351.72 and 224.54 is: 309.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.54 : 351.72 = 224.54 : x
  2. Step 2: Convert to fraction form
    255.54/351.72 = 224.54/x
  3. Step 3: Cross multiply
    255.54x = 351.72 × 224.54
  4. Step 4: Simplify right side
    255.54x = 78,975.21
  5. Step 5: Solve for x
    x = 78,975.21/255.54
  6. Step 6: Final answer
    x = 309.05

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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.