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Finding the Fourth Proportional to 255.48, 354.20 and 246.58

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Solution

The fourth proportional to 255.48, 354.20 and 246.58 is: 341.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.48 : 354.20 = 246.58 : x
  2. Step 2: Convert to fraction form
    255.48/354.20 = 246.58/x
  3. Step 3: Cross multiply
    255.48x = 354.20 × 246.58
  4. Step 4: Simplify right side
    255.48x = 87,338.64
  5. Step 5: Solve for x
    x = 87,338.64/255.48
  6. Step 6: Final answer
    x = 341.86

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.