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Finding the Fourth Proportional to 1,517.00, 2,273.72 and 639.32

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Solution

The fourth proportional to 1,517.00, 2,273.72 and 639.32 is: 958.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.00 : 2,273.72 = 639.32 : x
  2. Step 2: Convert to fraction form
    1,517.00/2,273.72 = 639.32/x
  3. Step 3: Cross multiply
    1,517.00x = 2,273.72 × 639.32
  4. Step 4: Simplify right side
    1,517.00x = 1,453,630.10
  5. Step 5: Solve for x
    x = 1,453,630.10/1,517.00
  6. Step 6: Final answer
    x = 958.22

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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.