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Finding the Fourth Proportional to 1,132.41, 1,562.44 and 712.97

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Solution

The fourth proportional to 1,132.41, 1,562.44 and 712.97 is: 983.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.41 : 1,562.44 = 712.97 : x
  2. Step 2: Convert to fraction form
    1,132.41/1,562.44 = 712.97/x
  3. Step 3: Cross multiply
    1,132.41x = 1,562.44 × 712.97
  4. Step 4: Simplify right side
    1,132.41x = 1,113,961.47
  5. Step 5: Solve for x
    x = 1,113,961.47/1,132.41
  6. Step 6: Final answer
    x = 983.71

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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.