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Finding the Fourth Proportional to 404.39, 557.90 and 246.90

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Solution

The fourth proportional to 404.39, 557.90 and 246.90 is: 340.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.39 : 557.90 = 246.90 : x
  2. Step 2: Convert to fraction form
    404.39/557.90 = 246.90/x
  3. Step 3: Cross multiply
    404.39x = 557.90 × 246.90
  4. Step 4: Simplify right side
    404.39x = 137,744.28
  5. Step 5: Solve for x
    x = 137,744.28/404.39
  6. Step 6: Final answer
    x = 340.62

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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.