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Finding the Fourth Proportional to 548.94, 823.47 and 447.09

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Solution

The fourth proportional to 548.94, 823.47 and 447.09 is: 670.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.94 : 823.47 = 447.09 : x
  2. Step 2: Convert to fraction form
    548.94/823.47 = 447.09/x
  3. Step 3: Cross multiply
    548.94x = 823.47 × 447.09
  4. Step 4: Simplify right side
    548.94x = 368,165.20
  5. Step 5: Solve for x
    x = 368,165.20/548.94
  6. Step 6: Final answer
    x = 670.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.