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Finding the Fourth Proportional to 146.24, 201.92 and 115.20

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Solution

The fourth proportional to 146.24, 201.92 and 115.20 is: 159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.24 : 201.92 = 115.20 : x
  2. Step 2: Convert to fraction form
    146.24/201.92 = 115.20/x
  3. Step 3: Cross multiply
    146.24x = 201.92 × 115.20
  4. Step 4: Simplify right side
    146.24x = 23,261.18
  5. Step 5: Solve for x
    x = 23,261.18/146.24
  6. Step 6: Final answer
    x = 159.06

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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.