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Finding the Fourth Proportional to 547.65, 755.45 and 326.69

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Solution

The fourth proportional to 547.65, 755.45 and 326.69 is: 450.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.65 : 755.45 = 326.69 : x
  2. Step 2: Convert to fraction form
    547.65/755.45 = 326.69/x
  3. Step 3: Cross multiply
    547.65x = 755.45 × 326.69
  4. Step 4: Simplify right side
    547.65x = 246,792.55
  5. Step 5: Solve for x
    x = 246,792.55/547.65
  6. Step 6: Final answer
    x = 450.64

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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.