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Finding the Fourth Proportional to 146.57, 202.28 and 88.31

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Solution

The fourth proportional to 146.57, 202.28 and 88.31 is: 121.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.57 : 202.28 = 88.31 : x
  2. Step 2: Convert to fraction form
    146.57/202.28 = 88.31/x
  3. Step 3: Cross multiply
    146.57x = 202.28 × 88.31
  4. Step 4: Simplify right side
    146.57x = 17,863.41
  5. Step 5: Solve for x
    x = 17,863.41/146.57
  6. Step 6: Final answer
    x = 121.88

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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.