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Finding the Fourth Proportional to 1,181.81, 1,771.94 and 565.49

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Solution

The fourth proportional to 1,181.81, 1,771.94 and 565.49 is: 847.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.81 : 1,771.94 = 565.49 : x
  2. Step 2: Convert to fraction form
    1,181.81/1,771.94 = 565.49/x
  3. Step 3: Cross multiply
    1,181.81x = 1,771.94 × 565.49
  4. Step 4: Simplify right side
    1,181.81x = 1,002,011.52
  5. Step 5: Solve for x
    x = 1,002,011.52/1,181.81
  6. Step 6: Final answer
    x = 847.87

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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.