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Finding the Fourth Proportional to 1,168.00, 1,611.77 and 725.89

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Solution

The fourth proportional to 1,168.00, 1,611.77 and 725.89 is: 1,001.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.00 : 1,611.77 = 725.89 : x
  2. Step 2: Convert to fraction form
    1,168.00/1,611.77 = 725.89/x
  3. Step 3: Cross multiply
    1,168.00x = 1,611.77 × 725.89
  4. Step 4: Simplify right side
    1,168.00x = 1,169,965.51
  5. Step 5: Solve for x
    x = 1,169,965.51/1,168.00
  6. Step 6: Final answer
    x = 1,001.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.