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Finding the Fourth Proportional to 1,176.87, 1,764.88 and 396.71

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Solution

The fourth proportional to 1,176.87, 1,764.88 and 396.71 is: 594.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.87 : 1,764.88 = 396.71 : x
  2. Step 2: Convert to fraction form
    1,176.87/1,764.88 = 396.71/x
  3. Step 3: Cross multiply
    1,176.87x = 1,764.88 × 396.71
  4. Step 4: Simplify right side
    1,176.87x = 700,136.72
  5. Step 5: Solve for x
    x = 700,136.72/1,176.87
  6. Step 6: Final answer
    x = 594.91

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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.