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Finding the Fourth Proportional to 562.43, 843.13 and 287.92

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Solution

The fourth proportional to 562.43, 843.13 and 287.92 is: 431.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.43 : 843.13 = 287.92 : x
  2. Step 2: Convert to fraction form
    562.43/843.13 = 287.92/x
  3. Step 3: Cross multiply
    562.43x = 843.13 × 287.92
  4. Step 4: Simplify right side
    562.43x = 242,751.16
  5. Step 5: Solve for x
    x = 242,751.16/562.43
  6. Step 6: Final answer
    x = 431.61

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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.