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Finding the Fourth Proportional to 283.32, 426.76 and 279.54

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Solution

The fourth proportional to 283.32, 426.76 and 279.54 is: 421.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.32 : 426.76 = 279.54 : x
  2. Step 2: Convert to fraction form
    283.32/426.76 = 279.54/x
  3. Step 3: Cross multiply
    283.32x = 426.76 × 279.54
  4. Step 4: Simplify right side
    283.32x = 119,295.79
  5. Step 5: Solve for x
    x = 119,295.79/283.32
  6. Step 6: Final answer
    x = 421.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.