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Finding the Fourth Proportional to 754.98, 1,126.06 and 669.32

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Solution

The fourth proportional to 754.98, 1,126.06 and 669.32 is: 998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.98 : 1,126.06 = 669.32 : x
  2. Step 2: Convert to fraction form
    754.98/1,126.06 = 669.32/x
  3. Step 3: Cross multiply
    754.98x = 1,126.06 × 669.32
  4. Step 4: Simplify right side
    754.98x = 753,694.48
  5. Step 5: Solve for x
    x = 753,694.48/754.98
  6. Step 6: Final answer
    x = 998.30

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Double scale
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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.