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Finding the Fourth Proportional to 156.88, 236.24 and 136.83

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Solution

The fourth proportional to 156.88, 236.24 and 136.83 is: 206.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.88 : 236.24 = 136.83 : x
  2. Step 2: Convert to fraction form
    156.88/236.24 = 136.83/x
  3. Step 3: Cross multiply
    156.88x = 236.24 × 136.83
  4. Step 4: Simplify right side
    156.88x = 32,324.72
  5. Step 5: Solve for x
    x = 32,324.72/156.88
  6. Step 6: Final answer
    x = 206.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.