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Finding the Fourth Proportional to 569.40, 855.74 and 281.04

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Solution

The fourth proportional to 569.40, 855.74 and 281.04 is: 422.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.40 : 855.74 = 281.04 : x
  2. Step 2: Convert to fraction form
    569.40/855.74 = 281.04/x
  3. Step 3: Cross multiply
    569.40x = 855.74 × 281.04
  4. Step 4: Simplify right side
    569.40x = 240,497.17
  5. Step 5: Solve for x
    x = 240,497.17/569.40
  6. Step 6: Final answer
    x = 422.37

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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.