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Finding the Fourth Proportional to 283.80, 423.23 and 268.45

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Solution

The fourth proportional to 283.80, 423.23 and 268.45 is: 400.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.80 : 423.23 = 268.45 : x
  2. Step 2: Convert to fraction form
    283.80/423.23 = 268.45/x
  3. Step 3: Cross multiply
    283.80x = 423.23 × 268.45
  4. Step 4: Simplify right side
    283.80x = 113,616.09
  5. Step 5: Solve for x
    x = 113,616.09/283.80
  6. Step 6: Final answer
    x = 400.34

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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.