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Finding the Fourth Proportional to 529.92, 794.28 and 255.39

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Solution

The fourth proportional to 529.92, 794.28 and 255.39 is: 382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.92 : 794.28 = 255.39 : x
  2. Step 2: Convert to fraction form
    529.92/794.28 = 255.39/x
  3. Step 3: Cross multiply
    529.92x = 794.28 × 255.39
  4. Step 4: Simplify right side
    529.92x = 202,851.17
  5. Step 5: Solve for x
    x = 202,851.17/529.92
  6. Step 6: Final answer
    x = 382.80

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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.