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Finding the Fourth Proportional to 160.90, 221.99 and 114.28

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Solution

The fourth proportional to 160.90, 221.99 and 114.28 is: 157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.90 : 221.99 = 114.28 : x
  2. Step 2: Convert to fraction form
    160.90/221.99 = 114.28/x
  3. Step 3: Cross multiply
    160.90x = 221.99 × 114.28
  4. Step 4: Simplify right side
    160.90x = 25,369.02
  5. Step 5: Solve for x
    x = 25,369.02/160.90
  6. Step 6: Final answer
    x = 157.67

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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.