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Finding the Fourth Proportional to 160.15, 221.00 and 97.98

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Solution

The fourth proportional to 160.15, 221.00 and 97.98 is: 135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.15 : 221.00 = 97.98 : x
  2. Step 2: Convert to fraction form
    160.15/221.00 = 97.98/x
  3. Step 3: Cross multiply
    160.15x = 221.00 × 97.98
  4. Step 4: Simplify right side
    160.15x = 21,651.99
  5. Step 5: Solve for x
    x = 21,651.99/160.15
  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.