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Finding the Fourth Proportional to 150.02, 205.74 and 143.79

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Solution

The fourth proportional to 150.02, 205.74 and 143.79 is: 197.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.02 : 205.74 = 143.79 : x
  2. Step 2: Convert to fraction form
    150.02/205.74 = 143.79/x
  3. Step 3: Cross multiply
    150.02x = 205.74 × 143.79
  4. Step 4: Simplify right side
    150.02x = 29,582.58
  5. Step 5: Solve for x
    x = 29,582.58/150.02
  6. Step 6: Final answer
    x = 197.19

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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.