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Finding the Fourth Proportional to 689.31, 950.94 and 531.99

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Solution

The fourth proportional to 689.31, 950.94 and 531.99 is: 733.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    689.31 : 950.94 = 531.99 : x
  2. Step 2: Convert to fraction form
    689.31/950.94 = 531.99/x
  3. Step 3: Cross multiply
    689.31x = 950.94 × 531.99
  4. Step 4: Simplify right side
    689.31x = 505,890.57
  5. Step 5: Solve for x
    x = 505,890.57/689.31
  6. Step 6: Final answer
    x = 733.91

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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.