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Finding the Fourth Proportional to 547.07, 755.24 and 422.45

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Solution

The fourth proportional to 547.07, 755.24 and 422.45 is: 583.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.07 : 755.24 = 422.45 : x
  2. Step 2: Convert to fraction form
    547.07/755.24 = 422.45/x
  3. Step 3: Cross multiply
    547.07x = 755.24 × 422.45
  4. Step 4: Simplify right side
    547.07x = 319,052.50
  5. Step 5: Solve for x
    x = 319,052.50/547.07
  6. Step 6: Final answer
    x = 583.20

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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.