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Finding the Fourth Proportional to 156.60, 236.08 and 133.96

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Solution

The fourth proportional to 156.60, 236.08 and 133.96 is: 201.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.60 : 236.08 = 133.96 : x
  2. Step 2: Convert to fraction form
    156.60/236.08 = 133.96/x
  3. Step 3: Cross multiply
    156.60x = 236.08 × 133.96
  4. Step 4: Simplify right side
    156.60x = 31,625.28
  5. Step 5: Solve for x
    x = 31,625.28/156.60
  6. Step 6: Final answer
    x = 201.95

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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.