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Finding the Fourth Proportional to 1,182.62, 1,773.39 and 857.54

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Solution

The fourth proportional to 1,182.62, 1,773.39 and 857.54 is: 1,285.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.62 : 1,773.39 = 857.54 : x
  2. Step 2: Convert to fraction form
    1,182.62/1,773.39 = 857.54/x
  3. Step 3: Cross multiply
    1,182.62x = 1,773.39 × 857.54
  4. Step 4: Simplify right side
    1,182.62x = 1,520,752.86
  5. Step 5: Solve for x
    x = 1,520,752.86/1,182.62
  6. Step 6: Final answer
    x = 1,285.92

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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.