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Finding the Fourth Proportional to 547.11, 754.98 and 298.42

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Solution

The fourth proportional to 547.11, 754.98 and 298.42 is: 411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.11 : 754.98 = 298.42 : x
  2. Step 2: Convert to fraction form
    547.11/754.98 = 298.42/x
  3. Step 3: Cross multiply
    547.11x = 754.98 × 298.42
  4. Step 4: Simplify right side
    547.11x = 225,301.13
  5. Step 5: Solve for x
    x = 225,301.13/547.11
  6. Step 6: Final answer
    x = 411.80

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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.