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Finding the Fourth Proportional to 511.30, 767.36 and 479.44

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Solution

The fourth proportional to 511.30, 767.36 and 479.44 is: 719.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.30 : 767.36 = 479.44 : x
  2. Step 2: Convert to fraction form
    511.30/767.36 = 479.44/x
  3. Step 3: Cross multiply
    511.30x = 767.36 × 479.44
  4. Step 4: Simplify right side
    511.30x = 367,903.08
  5. Step 5: Solve for x
    x = 367,903.08/511.30
  6. Step 6: Final answer
    x = 719.54

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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.