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Finding the Fourth Proportional to 1,190.84, 1,786.62 and 574.57

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Solution

The fourth proportional to 1,190.84, 1,786.62 and 574.57 is: 862.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.84 : 1,786.62 = 574.57 : x
  2. Step 2: Convert to fraction form
    1,190.84/1,786.62 = 574.57/x
  3. Step 3: Cross multiply
    1,190.84x = 1,786.62 × 574.57
  4. Step 4: Simplify right side
    1,190.84x = 1,026,532.59
  5. Step 5: Solve for x
    x = 1,026,532.59/1,190.84
  6. Step 6: Final answer
    x = 862.02

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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.