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Finding the Fourth Proportional to 548.02, 756.28 and 299.36

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Solution

The fourth proportional to 548.02, 756.28 and 299.36 is: 413.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.02 : 756.28 = 299.36 : x
  2. Step 2: Convert to fraction form
    548.02/756.28 = 299.36/x
  3. Step 3: Cross multiply
    548.02x = 756.28 × 299.36
  4. Step 4: Simplify right side
    548.02x = 226,398.48
  5. Step 5: Solve for x
    x = 226,398.48/548.02
  6. Step 6: Final answer
    x = 413.12

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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.