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Finding the Fourth Proportional to 529.55, 794.41 and 255.42

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Solution

The fourth proportional to 529.55, 794.41 and 255.42 is: 383.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.55 : 794.41 = 255.42 : x
  2. Step 2: Convert to fraction form
    529.55/794.41 = 255.42/x
  3. Step 3: Cross multiply
    529.55x = 794.41 × 255.42
  4. Step 4: Simplify right side
    529.55x = 202,907.56
  5. Step 5: Solve for x
    x = 202,907.56/529.55
  6. Step 6: Final answer
    x = 383.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.