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Finding the Fourth Proportional to 547.65, 755.22 and 423.12

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Solution

The fourth proportional to 547.65, 755.22 and 423.12 is: 583.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.65 : 755.22 = 423.12 : x
  2. Step 2: Convert to fraction form
    547.65/755.22 = 423.12/x
  3. Step 3: Cross multiply
    547.65x = 755.22 × 423.12
  4. Step 4: Simplify right side
    547.65x = 319,548.69
  5. Step 5: Solve for x
    x = 319,548.69/547.65
  6. Step 6: Final answer
    x = 583.49

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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.