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Finding the Fourth Proportional to 869.01, 1,300.58 and 662.41

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Solution

The fourth proportional to 869.01, 1,300.58 and 662.41 is: 991.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    869.01 : 1,300.58 = 662.41 : x
  2. Step 2: Convert to fraction form
    869.01/1,300.58 = 662.41/x
  3. Step 3: Cross multiply
    869.01x = 1,300.58 × 662.41
  4. Step 4: Simplify right side
    869.01x = 861,517.20
  5. Step 5: Solve for x
    x = 861,517.20/869.01
  6. Step 6: Final answer
    x = 991.38

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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.