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Finding the Fourth Proportional to 737.70, 1,101.13 and 689.06

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Solution

The fourth proportional to 737.70, 1,101.13 and 689.06 is: 1,028.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.70 : 1,101.13 = 689.06 : x
  2. Step 2: Convert to fraction form
    737.70/1,101.13 = 689.06/x
  3. Step 3: Cross multiply
    737.70x = 1,101.13 × 689.06
  4. Step 4: Simplify right side
    737.70x = 758,744.64
  5. Step 5: Solve for x
    x = 758,744.64/737.70
  6. Step 6: Final answer
    x = 1,028.53

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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.