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Finding the Fourth Proportional to 1,454.33, 2,175.98 and 891.62

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Solution

The fourth proportional to 1,454.33, 2,175.98 and 891.62 is: 1,334.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.33 : 2,175.98 = 891.62 : x
  2. Step 2: Convert to fraction form
    1,454.33/2,175.98 = 891.62/x
  3. Step 3: Cross multiply
    1,454.33x = 2,175.98 × 891.62
  4. Step 4: Simplify right side
    1,454.33x = 1,940,136.92
  5. Step 5: Solve for x
    x = 1,940,136.92/1,454.33
  6. Step 6: Final answer
    x = 1,334.04

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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.