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Finding the Fourth Proportional to 833.89, 1,151.79 and 625

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Solution

The fourth proportional to 833.89, 1,151.79 and 625 is: 863.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.89 : 1,151.79 = 625 : x
  2. Step 2: Convert to fraction form
    833.89/1,151.79 = 625/x
  3. Step 3: Cross multiply
    833.89x = 1,151.79 × 625
  4. Step 4: Simplify right side
    833.89x = 719,868.75
  5. Step 5: Solve for x
    x = 719,868.75/833.89
  6. Step 6: Final answer
    x = 863.27

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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.