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Finding the Fourth Proportional to 511.40, 765.86 and 294.56

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Solution

The fourth proportional to 511.40, 765.86 and 294.56 is: 441.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.40 : 765.86 = 294.56 : x
  2. Step 2: Convert to fraction form
    511.40/765.86 = 294.56/x
  3. Step 3: Cross multiply
    511.40x = 765.86 × 294.56
  4. Step 4: Simplify right side
    511.40x = 225,591.72
  5. Step 5: Solve for x
    x = 225,591.72/511.40
  6. Step 6: Final answer
    x = 441.13

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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.