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Finding the Fourth Proportional to 283.86, 423.45 and 238.50

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Solution

The fourth proportional to 283.86, 423.45 and 238.50 is: 355.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.86 : 423.45 = 238.50 : x
  2. Step 2: Convert to fraction form
    283.86/423.45 = 238.50/x
  3. Step 3: Cross multiply
    283.86x = 423.45 × 238.50
  4. Step 4: Simplify right side
    283.86x = 100,992.83
  5. Step 5: Solve for x
    x = 100,992.83/283.86
  6. Step 6: Final answer
    x = 355.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.