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Finding the Fourth Proportional to 160.51, 221.49 and 98.38

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Solution

The fourth proportional to 160.51, 221.49 and 98.38 is: 135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.51 : 221.49 = 98.38 : x
  2. Step 2: Convert to fraction form
    160.51/221.49 = 98.38/x
  3. Step 3: Cross multiply
    160.51x = 221.49 × 98.38
  4. Step 4: Simplify right side
    160.51x = 21,790.19
  5. Step 5: Solve for x
    x = 21,790.19/160.51
  6. Step 6: Final answer
    x = 135.76

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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.