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Finding the Fourth Proportional to 255.24, 352.32 and 247.56

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Solution

The fourth proportional to 255.24, 352.32 and 247.56 is: 341.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.24 : 352.32 = 247.56 : x
  2. Step 2: Convert to fraction form
    255.24/352.32 = 247.56/x
  3. Step 3: Cross multiply
    255.24x = 352.32 × 247.56
  4. Step 4: Simplify right side
    255.24x = 87,220.34
  5. Step 5: Solve for x
    x = 87,220.34/255.24
  6. Step 6: Final answer
    x = 341.72

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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.