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Finding the Fourth Proportional to 551.62, 755.78 and 544.78

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Solution

The fourth proportional to 551.62, 755.78 and 544.78 is: 746.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.62 : 755.78 = 544.78 : x
  2. Step 2: Convert to fraction form
    551.62/755.78 = 544.78/x
  3. Step 3: Cross multiply
    551.62x = 755.78 × 544.78
  4. Step 4: Simplify right side
    551.62x = 411,733.83
  5. Step 5: Solve for x
    x = 411,733.83/551.62
  6. Step 6: Final answer
    x = 746.42

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.