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Finding the Fourth Proportional to 403.43, 556.43 and 246.09

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Solution

The fourth proportional to 403.43, 556.43 and 246.09 is: 339.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.43 : 556.43 = 246.09 : x
  2. Step 2: Convert to fraction form
    403.43/556.43 = 246.09/x
  3. Step 3: Cross multiply
    403.43x = 556.43 × 246.09
  4. Step 4: Simplify right side
    403.43x = 136,930.63
  5. Step 5: Solve for x
    x = 136,930.63/403.43
  6. Step 6: Final answer
    x = 339.41

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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.