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Finding the Fourth Proportional to 754.77, 1,125.12 and 713.73

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Solution

The fourth proportional to 754.77, 1,125.12 and 713.73 is: 1,063.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.77 : 1,125.12 = 713.73 : x
  2. Step 2: Convert to fraction form
    754.77/1,125.12 = 713.73/x
  3. Step 3: Cross multiply
    754.77x = 1,125.12 × 713.73
  4. Step 4: Simplify right side
    754.77x = 803,031.90
  5. Step 5: Solve for x
    x = 803,031.90/754.77
  6. Step 6: Final answer
    x = 1,063.94

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1.5x scale

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.