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Finding the Fourth Proportional to 160.13, 221.00 and 97.96

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Solution

The fourth proportional to 160.13, 221.00 and 97.96 is: 135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.13 : 221.00 = 97.96 : x
  2. Step 2: Convert to fraction form
    160.13/221.00 = 97.96/x
  3. Step 3: Cross multiply
    160.13x = 221.00 × 97.96
  4. Step 4: Simplify right side
    160.13x = 21,648.53
  5. Step 5: Solve for x
    x = 21,648.53/160.13
  6. Step 6: Final answer
    x = 135.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.