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Finding the Fourth Proportional to 354.24, 530.60 and 267.68

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Solution

The fourth proportional to 354.24, 530.60 and 267.68 is: 400.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.24 : 530.60 = 267.68 : x
  2. Step 2: Convert to fraction form
    354.24/530.60 = 267.68/x
  3. Step 3: Cross multiply
    354.24x = 530.60 × 267.68
  4. Step 4: Simplify right side
    354.24x = 142,031.01
  5. Step 5: Solve for x
    x = 142,031.01/354.24
  6. Step 6: Final answer
    x = 400.95

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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.