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Finding the Fourth Proportional to 1,071.02, 1,608.26 and 662.75

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Solution

The fourth proportional to 1,071.02, 1,608.26 and 662.75 is: 995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.02 : 1,608.26 = 662.75 : x
  2. Step 2: Convert to fraction form
    1,071.02/1,608.26 = 662.75/x
  3. Step 3: Cross multiply
    1,071.02x = 1,608.26 × 662.75
  4. Step 4: Simplify right side
    1,071.02x = 1,065,874.32
  5. Step 5: Solve for x
    x = 1,065,874.32/1,071.02
  6. Step 6: Final answer
    x = 995.20

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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.