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Finding the Fourth Proportional to 404.48, 557.87 and 246.99

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Solution

The fourth proportional to 404.48, 557.87 and 246.99 is: 340.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.48 : 557.87 = 246.99 : x
  2. Step 2: Convert to fraction form
    404.48/557.87 = 246.99/x
  3. Step 3: Cross multiply
    404.48x = 557.87 × 246.99
  4. Step 4: Simplify right side
    404.48x = 137,788.31
  5. Step 5: Solve for x
    x = 137,788.31/404.48
  6. Step 6: Final answer
    x = 340.66

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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.