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Finding the Fourth Proportional to 547.77, 755.49 and 348.39

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Solution

The fourth proportional to 547.77, 755.49 and 348.39 is: 480.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.77 : 755.49 = 348.39 : x
  2. Step 2: Convert to fraction form
    547.77/755.49 = 348.39/x
  3. Step 3: Cross multiply
    547.77x = 755.49 × 348.39
  4. Step 4: Simplify right side
    547.77x = 263,205.16
  5. Step 5: Solve for x
    x = 263,205.16/547.77
  6. Step 6: Final answer
    x = 480.50

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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.