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Finding the Fourth Proportional to 394.43, 591.47 and 150.99

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Solution

The fourth proportional to 394.43, 591.47 and 150.99 is: 226.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.43 : 591.47 = 150.99 : x
  2. Step 2: Convert to fraction form
    394.43/591.47 = 150.99/x
  3. Step 3: Cross multiply
    394.43x = 591.47 × 150.99
  4. Step 4: Simplify right side
    394.43x = 89,303.65
  5. Step 5: Solve for x
    x = 89,303.65/394.43
  6. Step 6: Final answer
    x = 226.41

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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.