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Finding the Fourth Proportional to 403.89, 556.95 and 246.54

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Solution

The fourth proportional to 403.89, 556.95 and 246.54 is: 339.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.89 : 556.95 = 246.54 : x
  2. Step 2: Convert to fraction form
    403.89/556.95 = 246.54/x
  3. Step 3: Cross multiply
    403.89x = 556.95 × 246.54
  4. Step 4: Simplify right side
    403.89x = 137,310.45
  5. Step 5: Solve for x
    x = 137,310.45/403.89
  6. Step 6: Final answer
    x = 339.97

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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.