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Finding the Fourth Proportional to 349.28, 522.07 and 267.26

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Solution

The fourth proportional to 349.28, 522.07 and 267.26 is: 399.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.28 : 522.07 = 267.26 : x
  2. Step 2: Convert to fraction form
    349.28/522.07 = 267.26/x
  3. Step 3: Cross multiply
    349.28x = 522.07 × 267.26
  4. Step 4: Simplify right side
    349.28x = 139,528.43
  5. Step 5: Solve for x
    x = 139,528.43/349.28
  6. Step 6: Final answer
    x = 399.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.