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Finding the Fourth Proportional to 756.56, 1,133.01 and 669.99

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Solution

The fourth proportional to 756.56, 1,133.01 and 669.99 is: 1,003.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.56 : 1,133.01 = 669.99 : x
  2. Step 2: Convert to fraction form
    756.56/1,133.01 = 669.99/x
  3. Step 3: Cross multiply
    756.56x = 1,133.01 × 669.99
  4. Step 4: Simplify right side
    756.56x = 759,105.37
  5. Step 5: Solve for x
    x = 759,105.37/756.56
  6. Step 6: Final answer
    x = 1,003.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.