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Finding the Fourth Proportional to 511.68, 766.84 and 453.77

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Solution

The fourth proportional to 511.68, 766.84 and 453.77 is: 680.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.68 : 766.84 = 453.77 : x
  2. Step 2: Convert to fraction form
    511.68/766.84 = 453.77/x
  3. Step 3: Cross multiply
    511.68x = 766.84 × 453.77
  4. Step 4: Simplify right side
    511.68x = 347,968.99
  5. Step 5: Solve for x
    x = 347,968.99/511.68
  6. Step 6: Final answer
    x = 680.05

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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.