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Finding the Fourth Proportional to 1,451.80, 2,175.91 and 573.42

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Solution

The fourth proportional to 1,451.80, 2,175.91 and 573.42 is: 859.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.80 : 2,175.91 = 573.42 : x
  2. Step 2: Convert to fraction form
    1,451.80/2,175.91 = 573.42/x
  3. Step 3: Cross multiply
    1,451.80x = 2,175.91 × 573.42
  4. Step 4: Simplify right side
    1,451.80x = 1,247,708.02
  5. Step 5: Solve for x
    x = 1,247,708.02/1,451.80
  6. Step 6: Final answer
    x = 859.42

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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.