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Finding the Fourth Proportional to 1,600.63, 2,399.73 and 869.20

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Solution

The fourth proportional to 1,600.63, 2,399.73 and 869.20 is: 1,303.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,600.63 : 2,399.73 = 869.20 : x
  2. Step 2: Convert to fraction form
    1,600.63/2,399.73 = 869.20/x
  3. Step 3: Cross multiply
    1,600.63x = 2,399.73 × 869.20
  4. Step 4: Simplify right side
    1,600.63x = 2,085,836.06
  5. Step 5: Solve for x
    x = 2,085,836.06/1,600.63
  6. Step 6: Final answer
    x = 1,303.14

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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.