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Finding the Fourth Proportional to 146.79, 202.37 and 113.85

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Solution

The fourth proportional to 146.79, 202.37 and 113.85 is: 156.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.79 : 202.37 = 113.85 : x
  2. Step 2: Convert to fraction form
    146.79/202.37 = 113.85/x
  3. Step 3: Cross multiply
    146.79x = 202.37 × 113.85
  4. Step 4: Simplify right side
    146.79x = 23,039.26
  5. Step 5: Solve for x
    x = 23,039.26/146.79
  6. Step 6: Final answer
    x = 156.95

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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.