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Finding the Fourth Proportional to 689.00, 950.79 and 374.25

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Solution

The fourth proportional to 689.00, 950.79 and 374.25 is: 516.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    689.00 : 950.79 = 374.25 : x
  2. Step 2: Convert to fraction form
    689.00/950.79 = 374.25/x
  3. Step 3: Cross multiply
    689.00x = 950.79 × 374.25
  4. Step 4: Simplify right side
    689.00x = 355,838.13
  5. Step 5: Solve for x
    x = 355,838.13/689.00
  6. Step 6: Final answer
    x = 516.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.