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Finding the Fourth Proportional to 674.89, 929.33 and 625.88

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Solution

The fourth proportional to 674.89, 929.33 and 625.88 is: 861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.89 : 929.33 = 625.88 : x
  2. Step 2: Convert to fraction form
    674.89/929.33 = 625.88/x
  3. Step 3: Cross multiply
    674.89x = 929.33 × 625.88
  4. Step 4: Simplify right side
    674.89x = 581,649.06
  5. Step 5: Solve for x
    x = 581,649.06/674.89
  6. Step 6: Final answer
    x = 861.85

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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.