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Finding the Fourth Proportional to 283.14, 422.24 and 259.65

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Solution

The fourth proportional to 283.14, 422.24 and 259.65 is: 387.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.14 : 422.24 = 259.65 : x
  2. Step 2: Convert to fraction form
    283.14/422.24 = 259.65/x
  3. Step 3: Cross multiply
    283.14x = 422.24 × 259.65
  4. Step 4: Simplify right side
    283.14x = 109,633.32
  5. Step 5: Solve for x
    x = 109,633.32/283.14
  6. Step 6: Final answer
    x = 387.21

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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.