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Finding the Fourth Proportional to 148.37, 205.80 and 143.45

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Solution

The fourth proportional to 148.37, 205.80 and 143.45 is: 198.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.37 : 205.80 = 143.45 : x
  2. Step 2: Convert to fraction form
    148.37/205.80 = 143.45/x
  3. Step 3: Cross multiply
    148.37x = 205.80 × 143.45
  4. Step 4: Simplify right side
    148.37x = 29,522.01
  5. Step 5: Solve for x
    x = 29,522.01/148.37
  6. Step 6: Final answer
    x = 198.98

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.