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Finding the Fourth Proportional to 116.48, 160.28 and 113.76

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Solution

The fourth proportional to 116.48, 160.28 and 113.76 is: 156.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.48 : 160.28 = 113.76 : x
  2. Step 2: Convert to fraction form
    116.48/160.28 = 113.76/x
  3. Step 3: Cross multiply
    116.48x = 160.28 × 113.76
  4. Step 4: Simplify right side
    116.48x = 18,233.45
  5. Step 5: Solve for x
    x = 18,233.45/116.48
  6. Step 6: Final answer
    x = 156.54

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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.