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Finding the Fourth Proportional to 520.11, 778.86 and 303.03

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Solution

The fourth proportional to 520.11, 778.86 and 303.03 is: 453.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.11 : 778.86 = 303.03 : x
  2. Step 2: Convert to fraction form
    520.11/778.86 = 303.03/x
  3. Step 3: Cross multiply
    520.11x = 778.86 × 303.03
  4. Step 4: Simplify right side
    520.11x = 236,017.95
  5. Step 5: Solve for x
    x = 236,017.95/520.11
  6. Step 6: Final answer
    x = 453.78

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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.