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Finding the Fourth Proportional to 834.89, 1,151.45 and 625.56

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Solution

The fourth proportional to 834.89, 1,151.45 and 625.56 is: 862.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.89 : 1,151.45 = 625.56 : x
  2. Step 2: Convert to fraction form
    834.89/1,151.45 = 625.56/x
  3. Step 3: Cross multiply
    834.89x = 1,151.45 × 625.56
  4. Step 4: Simplify right side
    834.89x = 720,302.63
  5. Step 5: Solve for x
    x = 720,302.63/834.89
  6. Step 6: Final answer
    x = 862.75

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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.