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Finding the Fourth Proportional to 146.57, 202.31 and 100.08

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Solution

The fourth proportional to 146.57, 202.31 and 100.08 is: 138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.57 : 202.31 = 100.08 : x
  2. Step 2: Convert to fraction form
    146.57/202.31 = 100.08/x
  3. Step 3: Cross multiply
    146.57x = 202.31 × 100.08
  4. Step 4: Simplify right side
    146.57x = 20,246.68
  5. Step 5: Solve for x
    x = 20,246.68/146.57
  6. Step 6: Final answer
    x = 138.14

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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.