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Finding the Fourth Proportional to 529.33, 792.90 and 511

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Solution

The fourth proportional to 529.33, 792.90 and 511 is: 765.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.33 : 792.90 = 511 : x
  2. Step 2: Convert to fraction form
    529.33/792.90 = 511/x
  3. Step 3: Cross multiply
    529.33x = 792.90 × 511
  4. Step 4: Simplify right side
    529.33x = 405,171.90
  5. Step 5: Solve for x
    x = 405,171.90/529.33
  6. Step 6: Final answer
    x = 765.44

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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.