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Finding the Fourth Proportional to 548.94, 758.13 and 445.06

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Solution

The fourth proportional to 548.94, 758.13 and 445.06 is: 614.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.94 : 758.13 = 445.06 : x
  2. Step 2: Convert to fraction form
    548.94/758.13 = 445.06/x
  3. Step 3: Cross multiply
    548.94x = 758.13 × 445.06
  4. Step 4: Simplify right side
    548.94x = 337,412.62
  5. Step 5: Solve for x
    x = 337,412.62/548.94
  6. Step 6: Final answer
    x = 614.66

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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.