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Finding the Fourth Proportional to 746.97, 1,111.98 and 711.60

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Solution

The fourth proportional to 746.97, 1,111.98 and 711.60 is: 1,059.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.97 : 1,111.98 = 711.60 : x
  2. Step 2: Convert to fraction form
    746.97/1,111.98 = 711.60/x
  3. Step 3: Cross multiply
    746.97x = 1,111.98 × 711.60
  4. Step 4: Simplify right side
    746.97x = 791,284.97
  5. Step 5: Solve for x
    x = 791,284.97/746.97
  6. Step 6: Final answer
    x = 1,059.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.