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Finding the Fourth Proportional to 160.64, 239.68 and 134.96

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Solution

The fourth proportional to 160.64, 239.68 and 134.96 is: 201.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.64 : 239.68 = 134.96 : x
  2. Step 2: Convert to fraction form
    160.64/239.68 = 134.96/x
  3. Step 3: Cross multiply
    160.64x = 239.68 × 134.96
  4. Step 4: Simplify right side
    160.64x = 32,347.21
  5. Step 5: Solve for x
    x = 32,347.21/160.64
  6. Step 6: Final answer
    x = 201.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.