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Finding the Fourth Proportional to 1,353.64, 2,033.69 and 867.64

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Solution

The fourth proportional to 1,353.64, 2,033.69 and 867.64 is: 1,303.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.64 : 2,033.69 = 867.64 : x
  2. Step 2: Convert to fraction form
    1,353.64/2,033.69 = 867.64/x
  3. Step 3: Cross multiply
    1,353.64x = 2,033.69 × 867.64
  4. Step 4: Simplify right side
    1,353.64x = 1,764,510.79
  5. Step 5: Solve for x
    x = 1,764,510.79/1,353.64
  6. Step 6: Final answer
    x = 1,303.53

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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.