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Finding the Fourth Proportional to 156.64, 234.48 and 132.16

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Solution

The fourth proportional to 156.64, 234.48 and 132.16 is: 197.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.64 : 234.48 = 132.16 : x
  2. Step 2: Convert to fraction form
    156.64/234.48 = 132.16/x
  3. Step 3: Cross multiply
    156.64x = 234.48 × 132.16
  4. Step 4: Simplify right side
    156.64x = 30,988.88
  5. Step 5: Solve for x
    x = 30,988.88/156.64
  6. Step 6: Final answer
    x = 197.84

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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.