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Finding the Fourth Proportional to 753.51, 1,125.11 and 674.92

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Solution

The fourth proportional to 753.51, 1,125.11 and 674.92 is: 1,007.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.51 : 1,125.11 = 674.92 : x
  2. Step 2: Convert to fraction form
    753.51/1,125.11 = 674.92/x
  3. Step 3: Cross multiply
    753.51x = 1,125.11 × 674.92
  4. Step 4: Simplify right side
    753.51x = 759,352.21
  5. Step 5: Solve for x
    x = 759,352.21/753.51
  6. Step 6: Final answer
    x = 1,007.75

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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.