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Finding the Fourth Proportional to 156.59, 234.20 and 136.88

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Solution

The fourth proportional to 156.59, 234.20 and 136.88 is: 204.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.59 : 234.20 = 136.88 : x
  2. Step 2: Convert to fraction form
    156.59/234.20 = 136.88/x
  3. Step 3: Cross multiply
    156.59x = 234.20 × 136.88
  4. Step 4: Simplify right side
    156.59x = 32,057.30
  5. Step 5: Solve for x
    x = 32,057.30/156.59
  6. Step 6: Final answer
    x = 204.72

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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.