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Finding the Fourth Proportional to 569.11, 853.94 and 276.86

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Solution

The fourth proportional to 569.11, 853.94 and 276.86 is: 415.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.11 : 853.94 = 276.86 : x
  2. Step 2: Convert to fraction form
    569.11/853.94 = 276.86/x
  3. Step 3: Cross multiply
    569.11x = 853.94 × 276.86
  4. Step 4: Simplify right side
    569.11x = 236,421.83
  5. Step 5: Solve for x
    x = 236,421.83/569.11
  6. Step 6: Final answer
    x = 415.42

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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.