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Finding the Fourth Proportional to 511.13, 766.80 and 395.37

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Solution

The fourth proportional to 511.13, 766.80 and 395.37 is: 593.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.13 : 766.80 = 395.37 : x
  2. Step 2: Convert to fraction form
    511.13/766.80 = 395.37/x
  3. Step 3: Cross multiply
    511.13x = 766.80 × 395.37
  4. Step 4: Simplify right side
    511.13x = 303,169.72
  5. Step 5: Solve for x
    x = 303,169.72/511.13
  6. Step 6: Final answer
    x = 593.13

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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.