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Finding the Fourth Proportional to 1,100.87, 1,519.21 and 603.51

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Solution

The fourth proportional to 1,100.87, 1,519.21 and 603.51 is: 832.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100.87 : 1,519.21 = 603.51 : x
  2. Step 2: Convert to fraction form
    1,100.87/1,519.21 = 603.51/x
  3. Step 3: Cross multiply
    1,100.87x = 1,519.21 × 603.51
  4. Step 4: Simplify right side
    1,100.87x = 916,858.43
  5. Step 5: Solve for x
    x = 916,858.43/1,100.87
  6. Step 6: Final answer
    x = 832.85

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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.