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Finding the Fourth Proportional to 569.12, 853.63 and 203.90

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Solution

The fourth proportional to 569.12, 853.63 and 203.90 is: 305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.12 : 853.63 = 203.90 : x
  2. Step 2: Convert to fraction form
    569.12/853.63 = 203.90/x
  3. Step 3: Cross multiply
    569.12x = 853.63 × 203.90
  4. Step 4: Simplify right side
    569.12x = 174,050.38
  5. Step 5: Solve for x
    x = 174,050.38/569.12
  6. Step 6: Final answer
    x = 305.83

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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.