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Finding the Fourth Proportional to 547.36, 754.32 and 391.84

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Solution

The fourth proportional to 547.36, 754.32 and 391.84 is: 540.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.36 : 754.32 = 391.84 : x
  2. Step 2: Convert to fraction form
    547.36/754.32 = 391.84/x
  3. Step 3: Cross multiply
    547.36x = 754.32 × 391.84
  4. Step 4: Simplify right side
    547.36x = 295,572.75
  5. Step 5: Solve for x
    x = 295,572.75/547.36
  6. Step 6: Final answer
    x = 540.00

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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.