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Finding the Fourth Proportional to 893.41, 1,339.30 and 662.02

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Solution

The fourth proportional to 893.41, 1,339.30 and 662.02 is: 992.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.41 : 1,339.30 = 662.02 : x
  2. Step 2: Convert to fraction form
    893.41/1,339.30 = 662.02/x
  3. Step 3: Cross multiply
    893.41x = 1,339.30 × 662.02
  4. Step 4: Simplify right side
    893.41x = 886,643.39
  5. Step 5: Solve for x
    x = 886,643.39/893.41
  6. Step 6: Final answer
    x = 992.43

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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.