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Finding the Fourth Proportional to 597.89, 896.81 and 391.85

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Solution

The fourth proportional to 597.89, 896.81 and 391.85 is: 587.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    597.89 : 896.81 = 391.85 : x
  2. Step 2: Convert to fraction form
    597.89/896.81 = 391.85/x
  3. Step 3: Cross multiply
    597.89x = 896.81 × 391.85
  4. Step 4: Simplify right side
    597.89x = 351,408.56
  5. Step 5: Solve for x
    x = 351,408.56/597.89
  6. Step 6: Final answer
    x = 587.75

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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.