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Finding the Fourth Proportional to 754.01, 1,034.99 and 669.26

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Solution

The fourth proportional to 754.01, 1,034.99 and 669.26 is: 918.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.01 : 1,034.99 = 669.26 : x
  2. Step 2: Convert to fraction form
    754.01/1,034.99 = 669.26/x
  3. Step 3: Cross multiply
    754.01x = 1,034.99 × 669.26
  4. Step 4: Simplify right side
    754.01x = 692,668.89
  5. Step 5: Solve for x
    x = 692,668.89/754.01
  6. Step 6: Final answer
    x = 918.65

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.