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Finding the Fourth Proportional to 511.56, 767.61 and 509.94

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Solution

The fourth proportional to 511.56, 767.61 and 509.94 is: 765.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.56 : 767.61 = 509.94 : x
  2. Step 2: Convert to fraction form
    511.56/767.61 = 509.94/x
  3. Step 3: Cross multiply
    511.56x = 767.61 × 509.94
  4. Step 4: Simplify right side
    511.56x = 391,435.04
  5. Step 5: Solve for x
    x = 391,435.04/511.56
  6. Step 6: Final answer
    x = 765.18

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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.