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Finding the Fourth Proportional to 148.02, 202.79 and 142.54

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Solution

The fourth proportional to 148.02, 202.79 and 142.54 is: 195.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.02 : 202.79 = 142.54 : x
  2. Step 2: Convert to fraction form
    148.02/202.79 = 142.54/x
  3. Step 3: Cross multiply
    148.02x = 202.79 × 142.54
  4. Step 4: Simplify right side
    148.02x = 28,904.97
  5. Step 5: Solve for x
    x = 28,904.97/148.02
  6. Step 6: Final answer
    x = 195.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.