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Finding the Fourth Proportional to 754.91, 1,132.34 and 207.09

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Solution

The fourth proportional to 754.91, 1,132.34 and 207.09 is: 310.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.91 : 1,132.34 = 207.09 : x
  2. Step 2: Convert to fraction form
    754.91/1,132.34 = 207.09/x
  3. Step 3: Cross multiply
    754.91x = 1,132.34 × 207.09
  4. Step 4: Simplify right side
    754.91x = 234,495.26
  5. Step 5: Solve for x
    x = 234,495.26/754.91
  6. Step 6: Final answer
    x = 310.63

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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.