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Finding the Fourth Proportional to 569.98, 854.28 and 261.41

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Solution

The fourth proportional to 569.98, 854.28 and 261.41 is: 391.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.98 : 854.28 = 261.41 : x
  2. Step 2: Convert to fraction form
    569.98/854.28 = 261.41/x
  3. Step 3: Cross multiply
    569.98x = 854.28 × 261.41
  4. Step 4: Simplify right side
    569.98x = 223,313.06
  5. Step 5: Solve for x
    x = 223,313.06/569.98
  6. Step 6: Final answer
    x = 391.79

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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.