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Finding the Fourth Proportional to 248.28, 342.27 and 160.80

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Solution

The fourth proportional to 248.28, 342.27 and 160.80 is: 221.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.28 : 342.27 = 160.80 : x
  2. Step 2: Convert to fraction form
    248.28/342.27 = 160.80/x
  3. Step 3: Cross multiply
    248.28x = 342.27 × 160.80
  4. Step 4: Simplify right side
    248.28x = 55,037.02
  5. Step 5: Solve for x
    x = 55,037.02/248.28
  6. Step 6: Final answer
    x = 221.67

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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.