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Finding the Fourth Proportional to 512.01, 766.80 and 267.81

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Solution

The fourth proportional to 512.01, 766.80 and 267.81 is: 401.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.01 : 766.80 = 267.81 : x
  2. Step 2: Convert to fraction form
    512.01/766.80 = 267.81/x
  3. Step 3: Cross multiply
    512.01x = 766.80 × 267.81
  4. Step 4: Simplify right side
    512.01x = 205,356.71
  5. Step 5: Solve for x
    x = 205,356.71/512.01
  6. Step 6: Final answer
    x = 401.08

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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.