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Finding the Fourth Proportional to 511.60, 766.73 and 453.55

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Solution

The fourth proportional to 511.60, 766.73 and 453.55 is: 679.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.60 : 766.73 = 453.55 : x
  2. Step 2: Convert to fraction form
    511.60/766.73 = 453.55/x
  3. Step 3: Cross multiply
    511.60x = 766.73 × 453.55
  4. Step 4: Simplify right side
    511.60x = 347,748.12
  5. Step 5: Solve for x
    x = 347,748.12/511.60
  6. Step 6: Final answer
    x = 679.73

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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.