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Finding the Fourth Proportional to 402.64, 604.24 and 197.16

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Solution

The fourth proportional to 402.64, 604.24 and 197.16 is: 295.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.64 : 604.24 = 197.16 : x
  2. Step 2: Convert to fraction form
    402.64/604.24 = 197.16/x
  3. Step 3: Cross multiply
    402.64x = 604.24 × 197.16
  4. Step 4: Simplify right side
    402.64x = 119,131.96
  5. Step 5: Solve for x
    x = 119,131.96/402.64
  6. Step 6: Final answer
    x = 295.88

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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.