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Finding the Fourth Proportional to 928.50, 1,282.71 and 610.22

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Solution

The fourth proportional to 928.50, 1,282.71 and 610.22 is: 843.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.50 : 1,282.71 = 610.22 : x
  2. Step 2: Convert to fraction form
    928.50/1,282.71 = 610.22/x
  3. Step 3: Cross multiply
    928.50x = 1,282.71 × 610.22
  4. Step 4: Simplify right side
    928.50x = 782,735.30
  5. Step 5: Solve for x
    x = 782,735.30/928.50
  6. Step 6: Final answer
    x = 843.01

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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.