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Finding the Fourth Proportional to 397.16, 595.46 and 267.20

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Solution

The fourth proportional to 397.16, 595.46 and 267.20 is: 400.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.16 : 595.46 = 267.20 : x
  2. Step 2: Convert to fraction form
    397.16/595.46 = 267.20/x
  3. Step 3: Cross multiply
    397.16x = 595.46 × 267.20
  4. Step 4: Simplify right side
    397.16x = 159,106.91
  5. Step 5: Solve for x
    x = 159,106.91/397.16
  6. Step 6: Final answer
    x = 400.61

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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.