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Finding the Fourth Proportional to 569.76, 853.27 and 325.55

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Solution

The fourth proportional to 569.76, 853.27 and 325.55 is: 487.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.76 : 853.27 = 325.55 : x
  2. Step 2: Convert to fraction form
    569.76/853.27 = 325.55/x
  3. Step 3: Cross multiply
    569.76x = 853.27 × 325.55
  4. Step 4: Simplify right side
    569.76x = 277,782.05
  5. Step 5: Solve for x
    x = 277,782.05/569.76
  6. Step 6: Final answer
    x = 487.54

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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.