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Finding the Fourth Proportional to 323.99, 485.59 and 150.42

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Solution

The fourth proportional to 323.99, 485.59 and 150.42 is: 225.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.99 : 485.59 = 150.42 : x
  2. Step 2: Convert to fraction form
    323.99/485.59 = 150.42/x
  3. Step 3: Cross multiply
    323.99x = 485.59 × 150.42
  4. Step 4: Simplify right side
    323.99x = 73,042.45
  5. Step 5: Solve for x
    x = 73,042.45/323.99
  6. Step 6: Final answer
    x = 225.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.