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Finding the Fourth Proportional to 562.64, 843.26 and 254.40

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Solution

The fourth proportional to 562.64, 843.26 and 254.40 is: 381.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.64 : 843.26 = 254.40 : x
  2. Step 2: Convert to fraction form
    562.64/843.26 = 254.40/x
  3. Step 3: Cross multiply
    562.64x = 843.26 × 254.40
  4. Step 4: Simplify right side
    562.64x = 214,524.07
  5. Step 5: Solve for x
    x = 214,524.07/562.64
  6. Step 6: Final answer
    x = 381.28

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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.