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Finding the Fourth Proportional to 403.58, 606.59 and 267.09

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Solution

The fourth proportional to 403.58, 606.59 and 267.09 is: 401.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.58 : 606.59 = 267.09 : x
  2. Step 2: Convert to fraction form
    403.58/606.59 = 267.09/x
  3. Step 3: Cross multiply
    403.58x = 606.59 × 267.09
  4. Step 4: Simplify right side
    403.58x = 162,012.79
  5. Step 5: Solve for x
    x = 162,012.79/403.58
  6. Step 6: Final answer
    x = 401.44

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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.