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Finding the Fourth Proportional to 569.39, 853.92 and 158.55

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Solution

The fourth proportional to 569.39, 853.92 and 158.55 is: 237.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.39 : 853.92 = 158.55 : x
  2. Step 2: Convert to fraction form
    569.39/853.92 = 158.55/x
  3. Step 3: Cross multiply
    569.39x = 853.92 × 158.55
  4. Step 4: Simplify right side
    569.39x = 135,389.02
  5. Step 5: Solve for x
    x = 135,389.02/569.39
  6. Step 6: Final answer
    x = 237.78

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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.